int-hack-groupe7

* Refactor heartbeat packet into message for TLV

* Refactor Analysis-Server for TLV protocol

* Adjust Heartbeat packet tests for TLV

* Remove obsolete ping packet

* Add comments

* Add message registry for analysis packet types

* Update hive.go

* Refactor analysis message registry initialization

* go mod tidy for integration tests

* format files with gofmt

* Linter warning fix

* Small fix