XS✔ ◾ Updating CodeQL configuration

[muiriswoulfe]

Summary

This change primarily improves the clarity of the pull request template and reorganizes the CodeQL validation workflow, moving this from the build.yml workflow to a new codeql.yml workflow.

Simplification of Pull Request Template:

• .github/pull_request_template.md: The pull request template was simplified by removing the separate "Motivation" and "Technical" sections and replacing them with a single comment instructing users to provide a summary of the reasons or motivations behind the PR, what it aims to accomplish, and technical implementation details.

Reorganization of CodeQL Validation Workflow:

• .github/workflows/build.yml: The "validate-codeql" job was removed from this workflow.
• .github/workflows/codeql.yml: A new workflow file was created for the CodeQL validation job. This job is set to run on push and pull request events for the main branch, on a weekly schedule, and on workflow dispatch events. The job includes steps to checkout the code, initialize CodeQL, and analyze the code.

[github-actions]

PR Metrics

✔ Thanks for keeping your pull request small.
✔ Thanks for adding tests.

	Lines
Product Code	-
Test Code	-
Subtotal	-
Ignored Code	60
Total	60

Metrics computed by PR Metrics. Add it to your Azure DevOps and GitHub PRs!

[github-advanced-security]

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