Custom Runtime Logger <> FileLogger

[Hk669]

Why are these changes needed?

To support custom logger for the developers.

Related issue number

Issues : #2581

Tasks

• add the file log functionality to write the logs into a file
• added the usage to the notebook

Checks

• I've included any doc changes needed for https://microsoft.github.io/autogen/. See https://microsoft.github.io/autogen/docs/Contribute#documentation to build and test documentation locally.
• I've added tests (if relevant) corresponding to the changes introduced in this PR.
• I've made sure all auto checks have passed.

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[codecov-commenter]

Codecov Report

Attention: Patch coverage is 70.70707% with 29 lines in your changes are missing coverage. Please review.

Project coverage is 42.89%. Comparing base (372ac1e) to head (afabe32).
Report is 23 commits behind head on main.

Files	Patch %	Lines
autogen/logger/file_logger.py	71.59%	21 Missing and 4 partials ⚠️
autogen/logger/logger_factory.py	60.00%	2 Missing ⚠️
autogen/runtime_logging.py	66.66%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2596      +/-   ##
==========================================
+ Coverage   33.11%   42.89%   +9.78%     
==========================================
  Files          86       87       +1     
  Lines        9108     9336     +228     
  Branches     1938     2139     +201     
==========================================
+ Hits         3016     4005     +989     
+ Misses       5837     4958     -879     
- Partials      255      373     +118     

Flag	Coverage Δ
unittest	12.70% <29.29%> (?)
unittests	42.19% <70.70%> (+9.07%)	⬆️

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[Hk669]

@ekzhu do we need different files for logs? as we have a different tables in SqliteLogger.

[krishnashed]

Compared it with the default sqlite logger, looks good to be merged!