Feat: Adding the ability to book ValueObjects into their corresponding branch (#414)

* Feat: added valueobjectbooking model

* Docs: adjusted docs

* Docs: updated another comment

* Feat: added first function to book ValueObjects

* Feat: intermediary commit so nothing gets lost

* Feat: nearly done with the refactor

* Feat: nearly finished the tangle refactor

* Feat: finished refactor

* Fix: fixed unreleased object

* Refactor: removed comment

* Feat: added LedgerState.Balances

* Feat: first successful test for valuetransfer

* Feat: refactor

* Fix: fixed bug in BranchesConflicting

* Fix: fixed annotations from cilint

* Feat: commit so we can merge :D