feat: pull request template

.github/PULL_REQUEST_TEMPLATE.md

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+<!--
+Hello 👋 Thank you for submitting a pull request.
+
+To help us merge your PR, make sure to follow the instructions below:
+
+- Create or update the documentation. (Should be made against the `main` branch)
+- Create or update the tests.
+- Refer to the issue you are closing in the PR description - fix #issue
+- Specify if the PR is in WIP (work in progress) state or ready to be merged
+
+Please ensure you read through the Contributing Guide:
+https://github.com/joschan21/profanity.dev/blob/main/CONTRIBUTING.md
+-->
+
+## Description
+
+Describe the technical changes you did.
+
+## Why is it needed?
+
+Describe the issue you are solving.
+
+## Screenshot or GIFs (if applicable)
+
+If the changes include visual modifications, include screenshots or GIFs to demonstrate the before and after effects.
+
+## Testing
+
+Describe the testing strategy employed for this PR, including any manual or automated tests conducted. Specify the testing environment and provide clear instructions for reviewers on how to reproduce the tests, if applicable.
+
+## Related issue(s)/PR(s)
+
+Let us know if this is related to any issue/pull request
+
+## Additional Notes
+
+Include any additional information or context that may be helpful for reviewers.