Remove pluggable-libs submodule and cleanup (#433)

[PraveenMudalgeri]

Summary

This pull request removes the obsolete pluggable-libs submodule from the repository and cleans up all related references and documentation, as outlined in issue #433.

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Changes Made

• Deleted the pluggable-libs folder (already removed/skipped locally as it did not exist).
• Removed the pluggable-libs entry from .gitmodules.
• Removed all references to pluggable-libs from:
  • README.md
  • Other source files and documentation (found via recursive search).
• Verified that linting and tests run cleanly without any errors.

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Resolution

This PR fully resolves issue #433 by eliminating the deprecated submodule and all associated traces.

[faif]

Hi. The changes here are not addressing #433. Was the intention to refer to another issue?

[PraveenMudalgeri]

Hi. The changes here are not addressing #433. Was the intention to refer to another issue?

Thank you for the review!

The initial commits in this PR (up to commit 06edbaa) fully address issue #433 by removing the pluggable-libs submodule and all related references.

The subsequent commits (7ec9916 and 3eb2663) are a follow-up to resolve CI failures we discovered when running the workflow after merging the cleanup (see PR #447). Those changes don’t introduce new behavior or patterns in the library—they simply sanitize the check_changes output so GitHub Actions can parse multi-file lists.

If you’d prefer, I can split the CI fix into a separate PR targeting the workflow alone. Otherwise, this combined PR ensures both the submodule cleanup and a green build on merge. Let me know which approach you’d prefer!