let the `generate-rcc.go` skip files under `vendor` and `tests` subdirs;
decreases the binary size and thus RAM usage by ~130 MB!
```
$ ls -al resources.*
-rw-r--r--. 1 ltinkl ltinkl 81950109 Mar 8 14:47 resources.rcc
-rw-r--r--. 1 ltinkl ltinkl 215385428 Mar 8 12:35 resources.rcc.bloat
```
Contains minimal account creation and login
Considerations:
- migrated status-go wrapper and login code from the fix/cpp-structure (241eec)
- Minimal refactoring and changes at the moment. Expect further refactoring
follow up to reach the desired state.
- Fix missing keychain initialization
- Fix accounts DB initialization call done by startup -> Controller.openedAccounts -> status-go.OpenAccounts calls
- Small refactoring and todos for other steps
- fix SignalsManager
- fix async access to dereferenced status-go memory from SignalsManager
- fix SignalsManager not starting when registering
- finish dev end to end test for create account and login
- small improvements and added TODOs for future work
- add onboarding test helpers and start messaging test
- Refactoring towards Login UI integration
Closes: #5909Closes: #6028