fix(python): add otel-handler wrapper around otel-instrument

[duncanista]

What?

Creates an otel-handler script which forwards arguments directly to otel-instrument

Motivation

#1788

Notes

Docs PR: open-telemetry/opentelemetry.io#7048

Tests

• Manually built a layer and tested it

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: duncanista / name: jordan gonzález (5a6298d, d47bc4d, d43be42, b922cff, e859a12, 313e2bd, 1c23668)

[serkan-ozal]

Hi @duncanista can you also update

• sample app
• and tests
• and docs here https://github.com/open-telemetry/opentelemetry.io
  to use the new script file (otel-handler)

[duncanista]

Looking at the pipeline error – added docs in PR description

-- edit
Looks like a permissions issue, file indeed required permissions, but that hasn't fixed it in my side, still researching.

[duncanista]

Updated permissions and issue in unit tests, thanks for running the tests, allowed me to understand how they worked!

[duncanista]

Updated docs, they might be required to be approved by the maintainers of this repository – cheers!

[tylerbenson]

@open-telemetry/lambda-extension-maintainers Please comment here when this is released so the docs can be published.