RUM-3670 backpressure strategy

[xgouchet]

What does this PR do?

Create a BackPressure setting and BackPressure compatible BlockingQueue (will be used in a follow up PR)

[mariusc83]

Nicely done !!

[codecov-commenter]

Codecov Report

Merging #1938 (707aa84) into release/2.7.0 (9d7e3f9) will decrease coverage by 0.23%.
Report is 4 commits behind head on release/2.7.0.
The diff coverage is 77.38%.

Additional details and impacted files

@@                Coverage Diff                @@
##           release/2.7.0    #1938      +/-   ##
=================================================
- Coverage          83.56%   83.33%   -0.23%     
=================================================
  Files                481      485       +4     
  Lines              17413    17465      +52     
  Branches            2590     2591       +1     
=================================================
+ Hits               14550    14553       +3     
- Misses              2177     2202      +25     
- Partials             686      710      +24     

Files	Coverage Δ
...droid/core/configuration/BackPressureMitigation.kt	100.00% <100.00%> (ø)
...android/core/configuration/BackPressureStrategy.kt	100.00% <100.00%> (ø)
...atadog/android/core/configuration/Configuration.kt	95.05% <83.33%> (-1.65%)	⬇️
...core/internal/thread/BackPressuredBlockingQueue.kt	94.87% <94.87%> (ø)
...ore/internal/thread/BackPressureExecutorService.kt	42.31% <42.31%> (ø)

... and 25 files with indirect coverage changes

[0xnm]

great work! I added some questions for the better understanding.