Add PR template

[HypeMC]

Summary 📝

Adds a PR template...

Checklist ✅

• Tests updated 🐛
• Docs updated 📚
• Changelog updated 📋
• Breaking change ⚠️

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.23%. Comparing base (397ad7a) to head (260ff53).
⚠️ Report is 1 commits behind head on 1.x.

Additional details and impacted files

@@            Coverage Diff            @@
##                1.x     #138   +/-   ##
=========================================
  Coverage     97.23%   97.23%           
  Complexity      491      491           
=========================================
  Files            62       62           
  Lines          1373     1373           
=========================================
  Hits           1335     1335           
  Misses           38       38           

Flag	Coverage Δ
8.1	97.23% <ø> (ø)
8.2	97.15% <ø> (ø)
8.3	96.93% <ø> (ø)
8.4	96.93% <ø> (ø)
8.5	96.93% <ø> (ø)

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