Create and provide an Embrace implementation for OpenTelemetry

[bidetofevil]

Goal

Expose an implementation of the OpenTelemetry interface (i.e. object from which you can record all OTel signals) that includes our implementation of TracerProvider. This is needed for instrumentation libraries that don't take just a Tracer, but then entire OpenTelemetry interface.

Testing

Add tests to all levels

[bidetofevil]

• Remove getTracer methods from the API #972
• Create and provide an Embrace implementation for OpenTelemetry #971 👈
• master

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.92%. Comparing base (6ffaaa1) to head (88447e6).

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #971      +/-   ##
==========================================
- Coverage   80.97%   80.92%   -0.05%     
==========================================
  Files         444      445       +1     
  Lines       11814    11824      +10     
  Branches     1805     1806       +1     
==========================================
+ Hits         9566     9569       +3     
- Misses       1456     1459       +3     
- Partials      792      796       +4     

Files	Coverage Δ
...in/java/io/embrace/android/embracesdk/Embrace.java	81.54% <100.00%> (+0.11%)	⬆️
...ndroid/embracesdk/injection/OpenTelemetryModule.kt	93.33% <100.00%> (+0.35%)	⬆️
...embrace/android/embracesdk/internal/api/OTelApi.kt	50.00% <ø> (ø)
...mbracesdk/internal/api/delegate/OTelApiDelegate.kt	88.88% <100.00%> (+2.22%)	⬆️
...droid/embracesdk/opentelemetry/EmbOpenTelemetry.kt	100.00% <100.00%> (ø)

... and 3 files with indirect coverage changes

[fractalwrench]

LGTM