Update contribution guidelines to reduce WIP and Draft PR

[aryanmehrotra]

Pull Request Template

Description:

• Provide a concise explanation of the changes made.
• Mention the issue number(s) this PR addresses (if applicable).
• Highlight the motivation behind the changes and the expected benefits.

Breaking Changes (if applicable):

• List any breaking changes introduced by this PR.
• Explain the rationale behind these changes and how they will impact users.

Additional Information:

• Mention any relevant dependencies or external libraries used.
• Include screenshots or code snippets (if necessary) to clarify the changes.

Checklist:

• I have formatted my code using goimport and golangci-lint.
• All new code is covered by unit tests.
• This PR does not decrease the overall code coverage.
• I have reviewed the code comments and documentation for clarity.

Thank you for your contribution!