RUM-4413 Add telemetry on SR resources track

[xgouchet]

What does this PR do?

In order to better read the performance of the Image Resource upload for Session Replay, we add the telemetry on batch deleted/closed/expired with a dedicated track name.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.34%. Comparing base (ddf2286) to head (b5d0296).

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #2027      +/-   ##
===========================================
+ Coverage    83.17%   83.34%   +0.18%     
===========================================
  Files          486      486              
  Lines        17633    17670      +37     
  Branches      2680     2687       +7     
===========================================
+ Hits         14665    14727      +62     
+ Misses        2232     2201      -31     
- Partials       736      742       +6     

Files	Coverage Δ
.../kotlin/com/datadog/android/api/feature/Feature.kt	100.00% <ø> (ø)
...id/core/internal/metrics/BatchMetricsDispatcher.kt	98.61% <100.00%> (+0.02%)	⬆️

... and 27 files with indirect coverage changes

[jonathanmos]

By adding this here, the feature name for Resources is now defined in two places - in Feature and also in the feature itself. I notice that this is also the case for Session Replay. Do we want to consolidate both of them to use only the constants from Feature and have a SST?