Rename client.Client to client.Info

[jpkrohling]

Includes documentation and how it's expected to be used by
both providers and consumers.

Fixes #4058

Signed-off-by: Juraci Paixão Kröhling [email protected]

[codecov]

Codecov Report

Merging #4416 (c62f1aa) into main (bcb9063) will increase coverage by 0.00%.
The diff coverage is 100.00%.

❗ Current head c62f1aa differs from pull request most recent head b988c01. Consider uploading reports for the commit b988c01 to get more accurate results

@@           Coverage Diff           @@
##             main    #4416   +/-   ##
=======================================
  Coverage   90.50%   90.51%           
=======================================
  Files         177      177           
  Lines       10357    10319   -38     
=======================================
- Hits         9374     9340   -34     
+ Misses        762      759    -3     
+ Partials      221      220    -1     

Impacted Files	Coverage Δ
receiver/otlpreceiver/internal/logs/otlp.go	100.00% <ø> (ø)
receiver/otlpreceiver/internal/metrics/otlp.go	100.00% <ø> (ø)
receiver/otlpreceiver/internal/trace/otlp.go	100.00% <ø> (ø)
receiver/otlpreceiver/otlphttp.go	58.55% <ø> (-3.11%)	⬇️
client/client.go	100.00% <100.00%> (+14.28%)	⬆️

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[jpkrohling]

Even though this is ready to be reviewed, this shouldn't be merged before the v0.39.0 release, as we probably want all of the PRs in this series to be merged for the same version.

[jpkrohling]

The contrib tests are expected to fail as a result of this PR:

# github.com/open-telemetry/opentelemetry-collector-contrib/processor/k8sattributesprocessor
processor/k8sattributesprocessor/pod_association.go:90:11: assignment mismatch: 2 variables but client.FromContext returns 1 value
FAIL	github.com/open-telemetry/opentelemetry-collector-contrib/internal/components [build failed]
testing: warning: no tests to run

A PR to fix this is ready (open-telemetry/opentelemetry-collector-contrib#6244) to be reviewed after the PRs for this repo are merged.