Update API configs.

[MadVikingGod]

This change will update the configs in the base API, go.opentelemetry.io/otel/trace and go.opentelemetry.io/otel/metric`, to reflect our contributing documentation.

Because these configs are consumed by the SDK, and any other alternative implementation, they can not be private. This also means that the members of these configs will need some accessor.

This will finish the last items of #1882, closes #536

In addition, this reorganizes spanOptions to prevent ignored options from being accepted in any steps. For example Span.End() no longer accepts attributes or links. Closes #1878

[codecov]

Codecov Report

Merging #1921 (5ee455a) into main (270cc60) will increase coverage by 0.1%.
The diff coverage is 85.7%.

@@           Coverage Diff           @@
##            main   #1921     +/-   ##
=======================================
+ Coverage   79.5%   79.6%   +0.1%     
=======================================
  Files        141     141             
  Lines       7464    7486     +22     
=======================================
+ Hits        5941    5966     +25     
+ Misses      1275    1271      -4     
- Partials     248     249      +1     

Impacted Files	Coverage Δ
bridge/opentracing/bridge.go	47.8% <0.0%> (ø)
bridge/opentracing/wrapper.go	100.0% <ø> (ø)
trace/noop.go	46.1% <0.0%> (ø)
trace/trace.go	83.6% <ø> (ø)
metric/metric.go	52.5% <75.0%> (ø)
trace/config.go	75.5% <75.0%> (+14.9%)	⬆️
bridge/opentracing/internal/mock.go	72.7% <77.7%> (ø)
bridge/opencensus/bridge.go	84.9% <100.0%> (ø)
internal/global/meter.go	90.3% <100.0%> (ø)
internal/global/trace.go	83.7% <100.0%> (ø)
... and 9 more

[MrAlias]

I'm not sure about the lint failure, they look unrelated to the changes introduced here. Other than the syntax error this all looks good! 😄

[MadVikingGod]

That is so strange. I got the error 123 once, but after re-running make I couldn't get it to reproduce. I also used the go test explorer extension, and all came back green.

[MrAlias]

That is so strange. I got the error 123 once, but after re-running make I couldn't get it to reproduce. I also used the go test explorer extension, and all came back green.

🤷