Add devcontainer

[esigo]

Fixes #3118 (issue)

Changes

bazelisk-linux-amd64 test --copt=-DENABLE_LOGS_PREVIEW --test_output=errors --cache_test_results=no --copt=-DENABLE_TEST //exporters/otlp/...

bash ci/do_ci.sh cmake.exporter.otprotocol.test

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

[netlify]

✅ Deploy Preview for opentelemetry-cpp-api-docs canceled.

Name	Link
🔨 Latest commit	c40abb5
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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.88%. Comparing base (497eaf4) to head (c40abb5).
Report is 152 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3123      +/-   ##
==========================================
+ Coverage   87.12%   87.88%   +0.76%     
==========================================
  Files         200      195       -5     
  Lines        6109     6137      +28     
==========================================
+ Hits         5322     5393      +71     
+ Misses        787      744      -43     

see 99 files with indirect coverage changes