[develop] Add annotate in pipeline runs.

[scottarnette]

Change Description

Adds an annotation to Buildkite pipeline runs that explains what environment variables can be set.

Change Type

Select ONE:

• Documentation

• Stability bug fix

• Other

• Other - special case

Testing Changes

Select ANY that apply:

• New Tests

• Existing Tests

• Test Framework

• CI System

• Other

Consensus Changes

• Consensus Changes

API Changes

• API Changes

Documentation Additions

• Documentation Additions

[kj4ezj]

📝