Add pull request template

[johannaengland]

To make it easier to contribute to Zino.

Reference: https://docs.github.com/en/communities/using-templates-to-encourage-useful-issues-and-pull-requests/creating-a-pull-request-template-for-your-repository

[github-actions[bot]]

Test results

    3 files      3 suites   49s :stopwatch: 315 tests 315 :heavy_check_mark: 0 :zzz: 0 :x: 945 runs  943 :heavy_check_mark: 2 :zzz: 0 :x:

Results for commit fae92e10.

:recycle: This comment has been updated with latest results.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 99.03%. Comparing base (3f7bc0f) to head (ba1b05e).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #222 +/- ## ======================================= Coverage 99.03% 99.03% ======================================= Files 50 50 Lines 6735 6735 ======================================= Hits 6670 6670 Misses 65 65 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.

[sonarcloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
No data about Duplication

See analysis details on SonarCloud