docs: pr tempate

[ghost]

Description

This PR updates the PR template so that a requester can provide details in a easier and more structured way.

Motivation and Context

How has this been tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• Add tests to cover changes as needed.
• Update documentation as needed.

[codecov-commenter]

Codecov Report

Merging #328 (3ea71dd) into dev (6add1ea) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##              dev     #328   +/-   ##
=======================================
  Coverage   79.19%   79.19%           
=======================================
  Files          45       45           
  Lines        1817     1817           
  Branches      304      304           
=======================================
  Hits         1439     1439           
  Misses        377      377           
  Partials        1        1           

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 6add1ea...3ea71dd. Read the comment docs.