Enable Issue Template Picker by Adding Templates and Adding Configuration File

[harryswift01]

Summary

This PR introduces a set of GitHub issue templates. These changes improve the contributor experience by providing clearly structured options for reporting issues and requesting documentation updates.

Changes

Add issue templates for various report types

• Added structured templates to support clearer and more consistent issue reporting.
• Enables users to quickly choose the correct issue category.

Add documentation issue template

• Introduced a dedicated template for documentation-related improvements or changes.
• Helps separate documentation issues from general or bug reports.

Add general report issue template

• Added a template to capture issues or requests that do not fall under a specific category.
• Provides a fallback option for contributors.

Impact

• Improves the contributor workflow by enabling GitHub’s issue template picker.
• Standardises and clarifies issue reporting across the repository.
• Reduces ambiguity and improves issue triage for maintainers.