Streamline logger creation of next log files

[claucambra]

By eliminating certain parts of the process of creating new log files, such as redundant searching for legacy client log files and regex matching, stepping into new log files should be a bit faster

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 3.70370% with 26 lines in your changes missing coverage. Please review.

Project coverage is 60.37%. Comparing base (cf68901) to head (dbebdae). Report is 2965 commits behind head on master.

Files with missing lines	Patch %	Lines
src/libsync/logger.cpp	0.00%	26 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5721      +/-   ##
==========================================
+ Coverage   60.26%   60.37%   +0.11%     
==========================================
  Files         143      143              
  Lines       18518    18526       +8     
==========================================
+ Hits        11159    11185      +26     
+ Misses       7359     7341      -18     

Files with missing lines	Coverage Δ
src/libsync/logger.h	61.53% <100.00%> (ø)
src/libsync/logger.cpp	29.21% <0.00%> (+0.64%)	:arrow_up:

... and 18 files with indirect coverage changes

[claucambra]

/backport to stable-3.9

[nextcloud-desktop-bot]

AppImage file: nextcloud-PR-5721-dbebdae2d098a530c2eb85a451e601e91ca6e400-x86_64.AppImage

To test this change/fix you can simply download above AppImage file and test it.

Please make sure to quit your existing Nextcloud app and backup your data.

[sonarqubecloud[bot]]

SonarCloud Quality Gate failed.   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
1 Code Smell

0.0% Coverage
0.0% Duplication