Change the log library from fimber to logging

[ademar111190]

Reasons to change from Fimber to Logging:

• Fimber IO has concurrency issues as reported here Some log lines seem to be truncated #588
• Fimber has not been receiving updates recently, even for bugs No implementation found for method log on channel flutter_fimber magillus/flutter-fimber#135 with PR for fixing them available Fix no method channel on Android magillus/flutter-fimber#137
• Although I use (a lot) the LogCat integration offered by Fimber, most of the team does not and they are already used to the logging structure of the logging library (as we are using it on breeze mobile already)

Drawbacks

• We lost the SizeRollingFileTree
  • I changed the logic to keep the last ten sessions as it seems a reasonable heuristic to me; Let me know your thoughts
• LogCat integration as mentioned earlier

How to test

• Everyone:
  • Goes to Developers -> three dots menu -> share logs
    • A zip file with the last 10 sessions (plus the current sessions) should be shared
• For devs:
  • Make sure the log shows on your console (debug flavors only)

Please also review the SDK side of the changes

breez/breez-sdk-greenlight#505

Fixes #588
Fixes #587

[ubbabeck]

code looks good and tested

works with logcat and vscode dev console and easy to filter.

exporting the logs also works.

[ademar111190]

• Just an addendum for clarity, we lost Logcat integrations but we still have basic functionalities working such as the output and filter messages by regex and by package

[erdemyerebasmaz]

LGTM!

Please re-trigger CI after breez-sdk changes are in place before merging, ty.

[roeierez]

Looks good!
One think I am missing is the sdk logs.
Now that the sdk logs exposes breezLogStream shouldn't we use it here and log the records?

[ademar111190]

Looks good! One think I am missing is the sdk logs. Now that the sdk logs exposes breezLogStream shouldn't we use it here and log the records?

Yes; I'm doing it here:

• https://github.com/breez/c-breez/pull/657/files#diff-e61eb31d013d12616f5532636a88cfa63631dda8f7829e5424e68542214d1608R58
• https://github.com/breez/c-breez/pull/657/files#diff-8229db30d0021c6aaf6196e316b5ca60b6d16a132c553f64380cdf512c6d506fR66-R85