ci: integrate gersemi to format and lint CMake files (#7346)

[ArthPatel1502]

Description

Addresses #7346.

This PR integrates Gersemi into the project's pre-commit pipeline to automatically format and lint CMake layout files (CMakeLists.txt and .cmake files).

Per the maintainer discussion on the tracking issue, Gersemi was chosen over cmake-format because it is actively maintained, supports modern CMake features, and provides an official pre-commit hook interface out of the box.

Changes Made

• Appended the BlankSpruce/gersemi-pre-commit hook repository to .pre-commit-config.yaml.
• Configured it to run automatically on any staged files during pre-commit checks.

Verification Plan

1. Ran pre-commit clean to clear localized hook environment definitions.
2. Evaluated configuration robustness globally via pre-commit run gersemi --all-files.

[echoix]

Ok, nice, can you apply the changes as you mentioned you did in your verification plan? As such, we’ll see how the changes and formatting looks like

[echoix]

And possibly add our definitions if needed