docs: enhance pull request template with detailed sections

[DeveshPatill]

This pull request enhances the pull request template by adding structured sections for better clarity and review efficiency.
The new template includes:

1.A section to link related issues.
2.A detailed list for PR fixes.
3.A pre-merge checklist to ensure code quality and consistency.

This update will help contributors follow a consistent workflow, reduce review time, and prevent common mistakes such as untested changes or unresolved lint errors.

BEFORE CHANGES:

AFTER CHANGES:

[vercel]

@DeveshPatill is attempting to deploy a commit to the Dhanush Nehru's projects Team on Vercel.

A member of the Team first needs to authorize it.

[Copilot]

Pull Request Overview

This PR enhances the GitHub pull request template to provide better structure and guidance for contributors. The update transforms a basic template into a comprehensive form that standardizes PR submissions and improves review efficiency.

• Adds structured sections including description, type of change, testing steps, and screenshots
• Expands the pre-merge checklist with additional quality assurance items
• Reorganizes content with clear separators and improved formatting for better readability

[Copilot]

The format should be more specific. Consider using 'Resolves #' or 'Resolves #[issue-number]' to clearly indicate where the actual issue number should be placed.

Suggested change

	Resolves # (issue number)
	Resolves #<issue-number>

[Copilot]

Grammar error: should be 'I have pulled the latest changes from the main branch' (missing 'the' article before 'main').

Suggested change

	- [ ] I have pulled the latest changes from `main` branch
	- [ ] I have pulled the latest changes from the `main` branch