Logging improvements

[adams85]

Describe the purpose of your pull request

This is an experiment/proposal for improving the internal logging of the SDK.

Main goals and benefits:

• Establish a pattern for defining log messages at a central location, which would make easier to keep log messages consistent across SDKs.
• Introduce event IDs to make identification of log events easier.
• Allow parameterized log messages (instead of logging preformatted strings) to enable structured logging and allow consumers to easily access .
• Simplify the ILogger interface. Custom loggers would need to implement only a single method instead of 4.

Requirement checklist (only if applicable)

• [ ] I have covered the applied changes with automated tests.
• [ ] I have executed the full automated test set against my changes.
• [ ] I have validated my changes against all supported platform versions.
• [ ] I have read and accepted the contribution agreement.

[adams85]

I finished the refactoring, so @zoltan-david and @sigewuzhere, the stage is yours.

The source file which is of most interest to you, is LogMessages.cs. All our log messages at level Info and above were collected into this file. Please check that the wording and the assigned log levels is correct. Also let me know if you find anything in the current implementation which should be improved.

[sonarcloud[bot]]

SonarCloud Quality Gate failed.   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
17 Code Smells

70.2% Coverage
0.0% Duplication