Strip unused files from the layer

[DarcyRaynerDD]

What does this PR do?

This PR strips additional unused files from the node layer, including the protobuf cli tool, .d.ts files and source maps.

Motivation

Decompressed layer size drops 10mb to 4.8mb.

Testing Guidelines

Additional Notes

Types of Changes

• Bug fix
• New feature
• Breaking change
• Misc (docs, refactoring, dependency upgrade, etc.)

Check all that apply

• This PR's description is comprehensive
• This PR contains breaking changes that are documented in the description
• This PR introduces new APIs or parameters that are documented and unlikely to change in the foreseeable future
• This PR impacts documentation, and it has been updated (or a ticket has been logged)
• This PR's changes are covered by the automated tests
• This PR collects user input/sensitive content into Datadog
• This PR passes the integration tests (ask a Datadog member to run the tests)

[codecov-commenter]

Codecov Report

Merging #221 (25860d8) into main (60ddd5d) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #221   +/-   ##
=======================================
  Coverage   88.06%   88.06%           
=======================================
  Files          31       31           
  Lines        1198     1198           
  Branches      240      240           
=======================================
  Hits         1055     1055           
  Misses         86       86           
  Partials       57       57           

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[maxday]

cool! maybe *.ts as well ?

[DarcyRaynerDD]

I took a look but couldn't find any .ts files in the compiled output.