Add support for CompositeTrigger

[Dirreke]

This is a BREAKING change.

This will support CompositeTriggerPolicy ([log4j]https://logging.apache.org/log4j/2.x/manual/filters.html#compositefilter).

It combines multiple triggering policies and returns true if any of the configured policies return true.

---

In addition, the following changes have been made.

• Bump MSRV to 1.69.
• Update examples log_to_file_with_rolling_file.

[codecov-commenter]

Codecov Report

Attention: 11 lines in your changes are missing coverage. Please review.

Comparison is base (c981ca4) 63.01% compared to head (bd31a6d) 62.96%.

Files	Patch %	Lines
src/append/rolling_file/policy/compound/mod.rs	40.00%	9 Missing ⚠️
...ppend/rolling_file/policy/compound/trigger/time.rs	89.47%	2 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##             main     #342      +/-   ##
==========================================
- Coverage   63.01%   62.96%   -0.05%     
==========================================
  Files          24       24              
  Lines        1560     1577      +17     
==========================================
+ Hits          983      993      +10     
- Misses        577      584       +7     

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[bconn98]

@Dirreke FYI this would need to go in a 2.0 release as it's a breaking change to the API

[Dirreke]

@Dirreke FYI this would need to go in a 2.0 release as it's a breaking change to the API

Agree.