Add ZoomIt webcam backgroun (blur) and microphone noise cancellation

[foxmsft]

Summary of the Pull Request

This change adds the RNNoise filter for noise cancellation (audio) and the Google mediapipe selfie_segmentation_cpu model for webcam background detection and blurring.

It also fixes an issue introduced with ba68b88 causing the ZoomIt shortcuts to fail to register in the standalone version.

PR Checklist

• Closes: #xxx

• Communication: I've discussed this with core contributors already. If the work hasn't been agreed, this work might be rejected
• Tests: Added/updated and all pass
• Localization: All end-user-facing strings can be localized
• Dev docs: Added/updated
• New binaries: Added on the required places
  • JSON for signing for new binaries
  • WXS for installer for new binaries and localization folder
  • YML for CI pipeline for new test projects
  • YML for signed pipeline
• Documentation updated: If checked, please file a pull request on our docs repo and link it here: #xxx

Detailed Description of the Pull Request / Additional comments

The Settings UI has been extended with a Noise cancellation option, a Background selection for the webcam and a Brightness slider.

The functionality for these is added to ZoomIt itself. Also, restored the Mono checkbox which was accidentally masked by b93fd97.

Validation Steps Performed

[github-advanced-security]

check-spelling found more than 20 potential problems in the proposed changes. Check the Files changed tab for more details.

[github-actions]

@check-spelling-bot Report

🔴 Please review

See the 📂 files view, the 📜action log, 👼 SARIF report, or 📝 job summary for details.

❌ Errors and Warnings	Count
⚠️ binary-file	1
⚠️ duplicate-pattern	2
❌ forbidden-pattern	1
⚠️ large-file	1

See ❌ Event descriptions for more information.

Some files were automatically ignored 🙈

These sample patterns would exclude them:

^src/modules/ZoomIt/ZoomIt/rnnoise/rnnoise_data_little\.c$
^src/modules/ZoomIt/ZoomIt/selfie_segmentation\.onnx$

You should consider adding them to:

.github/actions/spell-check/excludes.txt

File matching is via Perl regular expressions.

To check these files, more of their words need to be in the dictionary than not. You can use patterns.txt to exclude portions, add items to the dictionary (e.g. by adding them to allow.txt), or fix typos.

To update file exclusions, you could run the following commands

... in a clone of the git@github.com:foxmsft/PowerToys.git repository
on the foxmsft/zoomit-av-models branch (ℹ️ how do I use this?):

curl -s -S -L 'https://raw.githubusercontent.com/check-spelling/check-spelling/cfb6f7e75bbfc89c71eaa30366d0c166f1bd9c8c/apply.pl' |
perl - 'https://github.com/microsoft/PowerToys/actions/runs/27271097117/attempts/1' &&
git commit -m 'Update check-spelling metadata'

Forbidden patterns 🙅 (1)

In order to address this, you could change the content to not match the forbidden patterns (comments before forbidden patterns may help explain why they're forbidden), add patterns for acceptable instances, or adjust the forbidden patterns themselves.

These forbidden patterns matched content:

Should be a

\san (?=(?:[b-dfgjklpqtvwz]|h(?!onou?r|our|s[lv]|tml|ttp|ref)|n(?!ginx|grok|pm)|r(?!c)|s(?!s[ho]|vg))[a-z]|x(?!\b|[-\d]|ml))

If the flagged items are 🤯 false positives

If items relate to a ...

• binary file (or some other file you wouldn't want to check at all).

  Please add a file path to the excludes.txt file matching the containing file.

  File paths are Perl 5 Regular Expressions - you can test yours before committing to verify it will match your files.

  ^ refers to the file's path from the root of the repository, so ^README\.md$ would exclude README.md (on whichever branch you're using).

• well-formed pattern.

  If you can write a pattern that would match it,
  try adding it to the patterns.txt file.

  Patterns are Perl 5 Regular Expressions - you can test yours before committing to verify it will match your lines.

  Note that patterns can't match multiline strings.