SDK-2928 Add PR template

[sergiught]

Description

We are adding a new PR template in this PR.

References

Testing

• [ ] This change adds test coverage for new/changed/fixed functionality

Checklist

• [x] I have read and agreed to the terms within the Auth0 Code of Conduct.
• [x] I have read the Auth0 General Contribution Guidelines.
• [x] I have reviewed my own code beforehand.
• [x] I have added documentation for new/changed functionality in this PR.
• [x] All active GitHub checks for tests, formatting, and security are passing.
• [x] The correct base branch is being used, if not master.

[codecov-commenter]

Codecov Report

:exclamation: No coverage uploaded for pull request base (v2@aa0c5e2). Click here to learn what that means. The diff coverage is n/a.

@@          Coverage Diff          @@
##             v2     #110   +/-   ##
=====================================
  Coverage      ?   86.88%           
=====================================
  Files         ?        7           
  Lines         ?      183           
  Branches      ?        0           
=====================================
  Hits          ?      159           
  Misses        ?       19           
  Partials      ?        5           

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