chore: add custom GitHub issue templates for bug reports and feature requests.

[DelusionalSimon]

To improve the consistency and quality of new issues, we could create a set of standard issue templates. This will follow the type(scope): subject convention and provide clear, structured forms for bug reports and feature requests.

Tasks

• Create the .github/ISSUE_TEMPLATE directory in the repository root.

• Create a bug_report.md file with a defined template

• Create a feature_request.md file with a defined template

• (Optional) Create a config.yml file in the same directory to hide the blank issue option

  blank_issues_enabled: false
  

• Verify that the "New Issue" button now shows the "Bug Report" and "Feature Request" options.

• (Optional) Add additional templates