Feat: Refactor Preferred / Liked logic (#428)

* Feat: initial commit

* Feat: added setPreferred to TransactionMetadata

* Feat: added a Conflicting() method to the transactionMetadata

* Fix: fixed logic bug

* Feat: refactored fcob

* Refactor: refactored additional code

* Fix: fixed a bug in ForeachConsumers

* Refactor: cleaned up code

* Feat: implemented FCOB consensus into the valuetransfer dapp

* Refactor: refactored FCOB

* Docs: added some additional comments

* Docs: fixed comments

* Refactor: commit before branch change

* Feat: added PayloadLiked Event

* Refactor: fixed some missing comments + added liked to marshal

* Feat: reworked the preferred and liked propagation

* Refactor: cleaned up some logic

* Refactor: simplified code

* Refactor: cleaned up more stuff :P

* Refactor: refactor

* Feat: moved test + refactored fcob

* Fix: fixed a few bugs in liked propagation

* adapt to new hive.go version

* upgrade hive.go

* Feat: started implementing a wallet

* Feat: extended wallet files

* use store backed sequence

* add option to use in-memory database

* address review comments

* Fix: fixed missing events in branchmanaer

* Feat: propagate changes from branch to transaction

* Feat: started implementing confirmed propagation

* Fix: fixed unreachable code

* Refactor: refactored some code according to wolfgangs review

* Refactor: cleaned up the code according to DRY

* Refactor: refactored according to wollac

* Refactor: refactored according to wollac

* Refactor: refactored according to wollac

* Refactor: refactored the code to make it more readable

* Refactor: added some doc comments + cleaned up some more code

Co-authored-by: Wolfgang Welz <welzwo@gmail.com>