Replace emb.state with android.state

[lucaslabari]

Goal

• Replaced emb.state with android.state that is what the Opentelemetry documentation specifies that should be used.

Testing

Rely on existing unit tests.

[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 80.40%. Comparing base (17a1489) to head (1e8cfbb).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #713   +/-   ##
=======================================
  Coverage   80.39%   80.40%           
=======================================
  Files         426      426           
  Lines       11258    11258           
  Branches     1703     1703           
=======================================
+ Hits         9051     9052    +1     
  Misses       1486     1486           
+ Partials      721      720    -1     

Files	Coverage Δ
...d/embracesdk/opentelemetry/EmbraceAttributeKeys.kt	100.00% <ø> (ø)
...acesdk/opentelemetry/OpenTelemetryAttributeKeys.kt	100.00% <100.00%> (ø)
...roid/embracesdk/internal/logs/EmbraceLogService.kt	91.22% <0.00%> (ø)

... and 1 file with indirect coverage changes

[lucaslabari]

I just talked with backend and iOS and we agree on not using it yet. They argued that we are considering just 2 states instead of all the possible states defined in the Opentelemetry documentation.
Let's postpone the discussion and make the change once all platforms are ready.