[CONFIGURATION] deprecate builder cmake components

[dbarker]

Fixes # (issue)

The core configuration libraries with the builder interfaces are now installed unconditionally with the SDK. The exporter builder targets have their own CMake component but do not bring in any external dependencies.

This PR merges the separate builder components into the exporter component they are associated with. The CMake targets for the exporters and builders installed as a single CMake component. This makes it a bit easier for users (if CMake finds the exporter component it imports the exporter target and the builder target).

The following CMake components are deprecated and merged:

• exporters_ostream_builder merged into exporters_ostream
• exporters_otlp_builder_utils merged into exporters_otlp_common
• exporters_otlp_file_builder merged into exporters_otlp_file
• exporters_otlp_grpc_builder merged into exporters_otlp_grpc
• exporters_otlp_http_builder merged into exporters_otlp_http
• exporters_prometheus_builder merged into exporters_prometheus

# Prior to this PR a user needed to explicitly import the builder component to use it in declarative configuration
find_package(opentelemetry-cpp CONFIG REQUIRED COMPONENTS exporters_otlp_grpc exporters_otlp_grpc_builder)

# With this PR a user just needs to import the exporter component they want and the builder comes with it. 
find_package(opentelemetry-cpp CONFIG REQUIRED COMPONENTS exporters_otlp_grpc)

Changes

• Deprecate the separate CMake components for config builders. Calling find_package on the deprecated components will resolve to the associated exporter component with a deprecation message.
• Merge the CMake targets and install tests of the deprecated components into their associated components.
• New install test to validate calling find_package on the deprecated components

For significant contributions please make sure you have completed the following items:

• CHANGELOG.md updated for non-trivial changes
• Unit tests have been added
• Changes in public API reviewed

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.59%. Comparing base (85308a2) to head (7f2d1d5).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4428   +/-   ##
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  Coverage   82.59%   82.59%           
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  Files         511      511           
  Lines       20039    20039           
=======================================
  Hits        16550    16550           
  Misses       3489     3489           

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[marcalff]

LGTM.

The original motivation for separate libraries was due to the dependency on yaml.

Now that the core configuration code is maintream and separated from yaml, this simplification makes sense.