Move package from AndroidManifest to namespace plugin config property for Session Replay module

[0xnm]

What does this PR do?

With AGP 7.3.0 package property in AndroidManifest is obsolete, namespace property in the AGP configuration should be used instead.

Since AndroidManfest is empty after the removal, it is deleted.

Review checklist (to be filled by reviewers)

• Feature or bugfix MUST have appropriate tests (unit, integration, e2e)
• Make sure you discussed the feature or bugfix with the maintaining team in an Issue
• Make sure each commit and the PR mention the Issue number (cf the CONTRIBUTING doc)

[codecov-commenter]

Codecov Report

Merging #1095 (8bcd8fc) into feature/sdkv2 (cabffad) will decrease coverage by 0.04%.
The diff coverage is n/a.

@@                Coverage Diff                @@
##           feature/sdkv2    #1095      +/-   ##
=================================================
- Coverage          82.66%   82.62%   -0.04%     
=================================================
  Files                349      349              
  Lines              11229    11229              
  Branches            1838     1838              
=================================================
- Hits                9282     9277       -5     
- Misses              1388     1393       +5     
  Partials             559      559              

Impacted Files	Coverage Δ
...src/main/kotlin/com/datadog/android/DatadogSite.kt	83.33% <0.00%> (-3.33%)	⬇️
...rsistence/file/batch/PlainBatchFileReaderWriter.kt	86.27% <0.00%> (-1.96%)	⬇️
...ain/java/com/datadog/opentracing/PendingTrace.java	58.62% <0.00%> (-1.72%)	⬇️
...rc/main/java/com/datadog/opentracing/DDTracer.java	55.65% <0.00%> (-0.84%)	⬇️
...android/v2/core/internal/DatadogContextProvider.kt	82.81% <0.00%> (ø)
...android/rum/internal/ndk/DatadogNdkCrashHandler.kt	88.36% <0.00%> (+0.53%)	⬆️
...ndroid/telemetry/internal/TelemetryEventHandler.kt	91.94% <0.00%> (+1.61%)	⬆️