Improve GH templates

[mtrezza]

• Added PR template according to our best practice templates
• Updated FR template according to our best practice templates

[codecov]

Codecov Report

Merging #1389 (a51f855) into master (2e7a406) will not change coverage.
The diff coverage is n/a.

❗ Current head a51f855 differs from pull request most recent head 45114bc. Consider uploading reports for the commit 45114bc to get more accurate results

@@           Coverage Diff           @@
##           master    #1389   +/-   ##
=======================================
  Coverage   99.10%   99.10%           
=======================================
  Files          61       61           
  Lines        5943     5943           
  Branches     1350     1350           
=======================================
  Hits         5890     5890           
  Misses         52       52           
  Partials        1        1           

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