Add content-based log filtering

[cedrickcooke]

Also adds docs to the readme for log filtering.

[github-actions]

Unit Test Results

  27 files    27 suites   3s ⏱️
171 tests 164 ✔️   7 💤 0 ❌
181 runs  169 ✔️ 12 💤 0 ❌

Results for commit c5b4a40.

[codecov]

Codecov Report

Merging #83 (c5b4a40) into main (1c1547e) will decrease coverage by 1.39%.
The diff coverage is 92.20%.

@@             Coverage Diff              @@
##               main      #83      +/-   ##
============================================
- Coverage     94.44%   93.04%   -1.40%     
- Complexity       51       82      +31     
============================================
  Files            13       18       +5     
  Lines           126      187      +61     
  Branches          8       15       +7     
============================================
+ Hits            119      174      +55     
- Misses            6       10       +4     
- Partials          1        3       +2     

Impacted Files	Coverage Δ
logging/src/commonMain/kotlin/Sensitivity.kt	0.00% <0.00%> (ø)
logging/src/commonMain/kotlin/DispatchLogger.kt	90.00% <89.65%> (-10.00%)	⬇️
logging/src/commonMain/kotlin/FilterLogger.kt	94.11% <94.11%> (ø)
logging/src/commonMain/kotlin/FilterLevelLogger.kt	100.00% <100.00%> (ø)
logging/src/commonMain/kotlin/Log.kt	100.00% <100.00%> (ø)
logging/src/commonMain/kotlin/LogLevel.kt	100.00% <100.00%> (ø)
logging/src/commonMain/kotlin/Logger.kt	100.00% <100.00%> (ø)
... and 2 more

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[twyatt]

Love it!