chore(templates): update PR template

[ReenigneArcher]

Description

This PR improves the PR template.

Key changes:

• Separate type of change options out according to conventional commit guidelines. This will make it easier to select the PR title for the squash and merge.
• Added a section for roadmap issues.
• Added comments to each section as well as the heading of the template.
• Added an "AI Usage" section to help maintainers gauge how heavily AI was used in the creation of the PR.

Screenshot

Issues Fixed or Closed

• Resolves .github: Update PR template roadmap#96

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Dependency update (updates to dependencies)
• Documentation update (changes to documentation)
• Repository update (changes to repository files, e.g. .github/...)

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added or updated the in code docstring/documentation-blocks for new or existing methods/components

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud