Add ZoomIt panoramic screenshot functionality (#46506)

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fix/what does it change/how was it tested (even manually, if necessary)?
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## Summary of the Pull Request
This adds several ZoomIt features:

- Panorama / scrolling screenshots. The image reconstruction happens
based on visual cues and accuracy depends on scroll speed during the
capture.
- Text extraction when snipping.
- Break timer improvements (the break timer is now a screen saver,
offering the possibility to lock the computer).
- Functionality for standalone clip trimming is present but not exposed
in the XAML UI.


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## PR Checklist

- [ ] Closes: #xxx
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issues) -->
- [x] **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](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ESRPSigning_core.json)
for new binaries
- [ ] [WXS for
installer](https://github.com/microsoft/PowerToys/blob/main/installer/PowerToysSetup/Product.wxs)
for new binaries and localization folder
- [ ] [YML for CI
pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ci/templates/build-powertoys-steps.yml)
for new test projects
- [ ] [YML for signed
pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/release.yml)
- [ ] **Documentation updated:** If checked, please file a pull request
on [our docs
repo](https://github.com/MicrosoftDocs/windows-uwp/tree/docs/hub/powertoys)
and link it here: #xxx

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or any additional comments/features here -->
## Detailed Description of the Pull Request / Additional comments

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wherever possible, but list manual validation steps taken as well -->
## Validation Steps Performed

The build is successful both with PowerToys and as a standalone
Sysinternals executable. We ensured that the features behave as expected
and that no regressions are introduced.

---------

Co-authored-by: Mark Russinovich <markruss@ntdev.microsoft.com>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
Co-authored-by: markrussinovich <markrussinovich@users.noreply.github.com>
Co-authored-by: MarioHewardt <marioh@microsoft.com>

src/common/interop/shared_constants.h

@@ -151,6 +151,7 @@ namespace CommonSharedConstants
     const wchar_t ZOOMIT_BREAK_EVENT[] = L"Local\\PowerToysZoomIt-BreakEvent-17f2e63c-4c56-41dd-90a0-2d12f9f50c6b";
     const wchar_t ZOOMIT_LIVEZOOM_EVENT[] = L"Local\\PowerToysZoomIt-LiveZoomEvent-390bf0c7-616f-47dc-bafe-a2d228add20d";
     const wchar_t ZOOMIT_SNIP_EVENT[] = L"Local\\PowerToysZoomIt-SnipEvent-2fd9c211-436d-4f17-a902-2528aaae3e30";
+    const wchar_t ZOOMIT_SNIPOCR_EVENT[] = L"Local\\PowerToysZoomIt-SnipOcrEvent-a7c3b1d2-9e4f-4a6b-8d5c-1f2e3a4b5c6d";
     const wchar_t ZOOMIT_RECORD_EVENT[] = L"Local\\PowerToysZoomIt-RecordEvent-74539344-eaad-4711-8e83-23946e424512";
 
     // Path to the events used by PowerDisplay