Move autopeering code from iotaledger/autopeering-sim to goshimmer (#91)

*  GetNextCandidate selection added

*  Recompile salt.proto

*  Refactor peer IDs completely

*  Recompile proto sources

*  WIP

*  renamed to sort

*  Return requested peers on request

*  Kepp track how ofter a managed peer was verified

*  sort adapted to the new peer

*  Query verified peers for new peers

*  WIP

*  Add manager tests

*  Add peering messages to protobuf

*  Make Salt methods consistent with Peer

*  Handle peering messages

*  WIP

*  Add To filed to PeersRequest

*  Add PeersRequest test

*  Adding PeersRequest benchmark

*  Move mpeer and helper functions to own file

*  Bump peer only once on reverification

*  WIP

* 

*  WIP

*  Increase buffer to prevent deadlocks

*  Remove unnecessary lock

*  Add peering request test

*  Make tests deterministic by triggering reverify

*  WIP

*  fixing concurrency issues

*  testManager improved

*  Don't send PeeringResponse for invalid salt

*  WIP

*  WIP

*  removed commented code

*  WIP

*  WIP

* Neighbourhood manager (#11)

*  GetNextCandidate selection added

*  fixing concurrency issues

*  testManager improved

*  removed commented code

*  WIP

*  WIP

*  WIP

*  WIP

*  Make TestAdd pass in neighborhood_test

`Add` should do nothing if the neighborhood list is full.

*  Improve TestSrvVerifyBoot

*  Upgrade to go 1.13

*  Use testify instead of magiconair/properties

* 

*  WIP

*  WIP

*  WIP

*  WIP

* Simulation (#14)

*  clear rejection filter after refreshing the public salt

*  clean rejection filter

*  Add mpeer test

*  gofmt test

*  Remove ineffactual assignments

*  Trigger panic when index is out of bound in deletePeer

*  Add selection test

*  Add TestGetFurtherest and TestGetPeerIndex

*  both salt updated at the same time and neighborhood dropped

*  Add node peering history for simulation

*  WIP

*  added sim visualization

*  removed root handler

*  added README

*  updated README

*  removed unused dependencies

*  Tidy go.mod

*  Work in progress

*  WIP

*  WIP

*  WIP

*  improved start button

*  WIP

*  added keyboard support for start

*  WIP

*  WIP

*  WIP

*  WIP

*  WIP

*  WIP

*  added input parameters

*  README updated

*  gif updated

*  figure updated

*  updated

*  updated gif

* removed simulation metrics

*  updated

*  updated

*  Extract server from discovery and peering

*  Use golang/protobuf

* Update README.md

*  Rename PeersRequest to DiscoveryRequest

*  Fixing typos

*  Move unused function to tests

*  The selection protocol depends on the discovery

*  Make tests more robust when using -race

*  Improve logging

*  Remove unnecessary arguments

*  Fix data races

*  added timeout for simulated network

*  added loop to animation

*  rename neighborhood to selection

*  adds initial salt and fixes simulation end

*  visualizer enabled by default

*  new parameter dropAll and improved python script

*  updated README

*  updated README

*  fix salt initialization

*  added blogpost link

*  Add badges to README

*  Add Travis CI for tests

*  Correct formating

*  Running golangci on Travis

*  Ignore return value of 'logger.Sync'

*  Remove unused functions

*  Add link to license

*  Move simnetwork to transport

*  Use the complete network protocol in simulations

*  Do not export selection/manager

*  Remove gRPC transport layer

*  Add UDP connection transport test

*  Implement the peer DB using Goshimmer database

*  Use the local GoShimmer version

*  Add support for a persistent database

*  Persist private key of local peer in database

*  Set TTL for bootstrap peers

*  Use GoShimmer events

*  Store the supported services in the local peer

*  Use most current GoShimmer git version as a dep

*  Switch to hive.go event package

*  Use correct module iotaledger/autopeering-sim

*  Provide dummy service in autopeering simulation

*  adds service support in the selection

*  adds peer discovered events

*  adds GetIncomingNeighbors and GetOutgoingNeighbors

*  fixes out of bound error in splitNodeKey

*  adds public IP support

*  fixes localhost

*  fixes localhost parsing

*  changes selection loop to 1s

*  switches from fmt.Println to log.Debug

*  increases maxKnown to 1000 and always triggers discovered peer

*  adds PeerDeleted event

*  moves PeerDeleted event into deletePeer

*  adds config paramters for the peer discovery

*  adds config parameters to neighbor selection

*  enable/disable inbound/outbound selection

*  Improve Godoc comments

*  modifies disabled outbound selection

*  fixes bug with disabling the selection

*  removes getMyIP() from server

*  removes some debugging logs

*  Introduce services

- Each peer now comes with a set of services
- Local peer is a proper peer
- Services are exchanged during Pong and are available for all verified
peers

*  fixes GetVerifiedPeer

*  adds gossip key to the service

*  removes debugging logs

*  Add test for GetVerifiedPeer

*  Fix main

*  Add localNetwork to Protocol

*  Add new but verified peers to the manager

*  changes configurable parameters

*  fixes DiscoveryRequest field sequence

*  Regenerate proto files

*  Cleanup parameters

*  Fix potential race condition

*  Reduce logging verbosity

*  Add test for selection+discover

*  Return net.Addr in Transport

*  Remove inbound/outbound switches completely

*  Improve logging

*  Fix peerdb logs

*  Fix peer updating

*  Make TestProtFull more robust

*  Make queryInterval a parameter

*  Improve loggind during querying

*  Trigger PeerDiscovered only for active peers

*  Cleanup protocol tests

*  Add discovery test on protocol level

*  Rename maxVerified to maxManaged

*  Increase default query interval

*  Improve discover benchmarks

*  Fix manager tests

*  Do not use bugged assert.Eventually

*  Fix linter warnings in server

*  Remove unused parameters

*  Make transport work on slices of bytes

*  Fix typo in comments

*  Fix linter warnings

*  UpdateService accepts two strings

*  Add test that services are received in discover

*  adds required services

*  Handle closed connections consistently

*  Code cleanup

*  fixes DropPeer

*  improves debug messages

*  Log errors during reverification

* 

 Log packet size

* refactor: remove unused files

* refactor: use internal autopeering package

Co-authored-by: Angelo Capossele <angelocapossele@gmail.com>
Co-authored-by: jkrvivian <jkrvivian@gmail.com>