docs: add a second PR template, for software and other non-mapping PRs

[joanise]

PR Goal?

Add a software development oriented PR template to this repo.

Feedback sought?

simple agreement

Priority?

low

Tests added?

n/a

How to test?

Since this repo has a default template and an alternative template, it will be a two step process. To see what it will be like, click on https://github.com/joanise/just-testing/compare/main...dev.gzip-on-ci-all-OSs and then manually add ?expand=1&template=studio_web_pr_template.md, to accurately reproduce the process I'm suggesting for g2p.

Confidence?

high

Version change?

no

[github-actions[bot]]

CLI load time: 0:00.05
PR head 3b71f9b042c11b1e498cb61833aff9949c3bee46
Imports that take more than 0.1 s:
import time: self [us] | cumulative | imported package

[codecov[bot]]

Codecov Report

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

:exclamation: No coverage uploaded for pull request base (main@fc43dbd). Click here to learn what that means.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #378 +/- ## ======================================= Coverage ? 93.33% ======================================= Files ? 17 Lines ? 2431 Branches ? 543 ======================================= Hits ? 2269 Misses ? 92 Partials ? 70 ```

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