Update pull request template

[kmcginnes]

Description

Updates the GitHub pull request template to have an easier to read formatting and include helpful comments for open source contributors.

The format was heavily inspired from the nodejs.org GitHub repository template, which provides a great foundation to build upon.

Validation

The new format will look like this PR description.

• Verify comments match the language desired
• Verify links navigate to the right place
• Ensure all information desired from a PR is mentioned
• Ensure format is easy to understand

Related Issues

N/A

Check List

• I confirm that my contribution is made under the terms of the Apache 2.0 license.
• I have run pnpm run checks to ensure code compiles and meets standards.
• I have run pnpm run test to check if all tests are passing.
• I've covered new added functionality with unit tests if necessary.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 12.02%. Comparing base (4d0f1fd) to head (f0cf8ef).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #281   +/-   ##
=======================================
  Coverage   12.02%   12.02%           
=======================================
  Files         410      410           
  Lines       30481    30481           
  Branches      764      764           
=======================================
  Hits         3665     3665           
  Misses      26483    26483           
  Partials      333      333           

Flag	Coverage Δ
unittests	12.02% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[michaelnchin]

Clean and comprehensive, I like it! Thanks @kmcginnes. Let's also consider adding this template to the other repositories we own, such as neptune-export.