Sdk builder

[brettmc]

Fluent SDK builder mechanism to create and configure a working SDK.

Closes #301

[codecov]

Codecov Report

Merging #845 (7293011) into main (8798973) will decrease coverage by 0.79%.
The diff coverage is 40.81%.

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #845      +/-   ##
============================================
- Coverage     81.69%   80.90%   -0.80%     
- Complexity     1946     1973      +27     
============================================
  Files           241      246       +5     
  Lines          5080     5173      +93     
============================================
+ Hits           4150     4185      +35     
- Misses          930      988      +58     

Flag	Coverage Δ
7.4	80.38% <40.81%> (-0.79%)	⬇️
8.0	80.89% <40.81%> (-0.80%)	⬇️
8.1	81.04% <40.81%> (-0.80%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
src/SDK/Metrics/MeterProviderBuilder.php	0.00% <0.00%> (ø)
src/SDK/Metrics/NoopMeterProvider.php	0.00% <0.00%> (ø)
.../Trace/SpanProcessor/BatchSpanProcessorBuilder.php	0.00% <0.00%> (ø)
src/SDK/Trace/TracerProviderBuilder.php	0.00% <0.00%> (ø)
src/SDK/Metrics/MeterProvider.php	86.95% <33.33%> (-3.96%)	⬇️
src/SDK/Trace/TracerProvider.php	92.30% <33.33%> (-7.70%)	⬇️
src/SDK/SdkBuilder.php	82.14% <82.14%> (ø)
src/SDK/Sdk.php	100.00% <100.00%> (ø)
src/SDK/Trace/TracerProviderFactory.php	100.00% <100.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 8798973...7293011. Read the comment docs.

[tcarrio]

Mostly a vested citizen in the CNCF channel excited for the OTel PHP SDK. A couple things I noticed here that I thought I would comment on 🙂