Create aggregated log file in temp dir #2443

[albinsuresh]

Proposed changes

The temporary aggregated log file created by the log_manager actor will be created at the temp directory instead of the target file directory, to avoid permission issues when the log manager is not running as root.

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Improvement (general improvements like code refactoring that doesn't explicitly fix a bug or add any new functionality)
• Documentation Update (if none of the other choices apply)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Paste Link to the issue

#2443

Checklist

• I have read the CONTRIBUTING doc
• I have signed the CLA (in all commits with git commit -s)
• I ran cargo fmt as mentioned in CODING_GUIDELINES
• I used cargo clippy as mentioned in CODING_GUIDELINES
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

Further comments

[codecov]

Codecov Report

Merging #2460 (3f708f2) into main (ccff7ee) will increase coverage by 0.0%.
The diff coverage is 66.6%.

Additional details and impacted files

Files	Coverage Δ
crates/common/log_manager/src/log_utils.rs	89.8% <100.0%> (+3.1%)	⬆️
crates/extensions/c8y_log_manager/src/actor.rs	75.6% <100.0%> (+<0.1%)	⬆️
crates/extensions/tedge_log_manager/src/actor.rs	67.2% <100.0%> (+0.1%)	⬆️
crates/core/tedge_agent/src/agent.rs	0.0% <0.0%> (ø)
crates/extensions/tedge_log_manager/src/config.rs	0.0% <0.0%> (ø)
crates/extensions/tedge_log_manager/src/tests.rs	88.7% <81.8%> (-0.4%)	⬇️
plugins/tedge_log_plugin/src/lib.rs	0.0% <0.0%> (ø)

... and 5 files with indirect coverage changes

[github-actions]

Robot Results

✅ Passed	❌ Failed	⏭️ Skipped	Total	Pass %	⏱️ Duration
362	0	3	362	100	55m35.638999999s

[rina23q]

LGTM