Upgrade documentation workflow

[teogor]

Upgrade Documentation Workflow for Drifter Plugin

This pull request introduces several enhancements to the Drifter plugin's documentation workflow, improving efficiency and reliability:

Changes:

• Streamlined documentation build:
  • Removed unnecessary permissions grant step.
  • Improved dependency installation using pip install --upgrade.
  • Optimized MkDocs build commands.
• Enhanced API reference relocation:
  • Created a dedicated directory for API references (build/docs/${{ env.REPOSITORY }}/html).
  • Simplified file copying process.
• Automated pull request creation:
  • Generates a PR title and body with key information.
  • Adds "documentation" label for better organization.
  • Merges the PR automatically (optional, depending on preferences).

Benefits:

• Faster and more reliable documentation build.
• Cleaner separation of concerns for MkDocs and API references.
• Automated PR creation saves time and effort.