feat: add Marshall CV-370 day/night toggle

[rueger-events-bot]

Summary

• Adds a Marshall CV-370 option in the NDI source panel with host/IP configuration.
• Adds a day/night toggle button that sends the CV-370 IR cut command used by the Marshall Companion module (ircut: 1 for daylight, ircut: 0 for night).
• Persists the CV-370 enablement, host, and last selected mode in project files.
• Adds a Qt unit test for CV-370 request URL generation.

Closes #1

Test Plan

• cmake -S . -B build-test -DBUILD_TESTING=ON with a local stub NDI SDK
• cmake --build build-test --target onpoint_tests --parallel
• ctest --test-dir build-test --output-on-failure

Note: a full Linux onpoint target build currently reaches an existing platform gap unrelated to this change: DnsSdBridge has macOS/Windows implementations, but no Linux implementation is linked by CMake.

[hrueger]

Please change the following things:

• make this more modular (there should be only one MarshallCV370 file providing logic and controls, but no cv370 logic in the main app files). So that it is easy to add support for more / different cams without ending up with thousands of properties in StreamSourcePanel for example...
• Can you detect whether it is a CV370 by getting the IP from the NDI Stream?

[rueger-events-bot]

Implemented the requested changes:

• Moved the CV-370 UI/control flow into the Marshall CV-370 module so StreamSourcePanel only hosts the panel and MainWindow only persists the config via the module helper.
• Added NDI source endpoint propagation from discovery using the NDI source URL address.
• Added automatic CV-370 probing from the selected NDI stream IP and auto-enables/fills the CV-370 host when detected.
• Added unit tests for NDI URL host extraction and detection request URL generation.

Verified locally:

• QT_QPA_PLATFORM=offscreen ctest --test-dir build --output-on-failure -R marshall_cv370_controller

Note: full Linux app link is not representative here because this environment lacks the real NDI/DNS-SD platform libraries; the focused tests pass.

[hrueger]

Much better, but the Camera control should be an extra panel. Allow user to input a custom host/ip for example if that does not match with ndi or using a different stream.
In addition: some widgets are too wide, they cause horizontal scrolling. This should not be the case. All other widgets in the other panels dont cause scroll but shrink.
See this photo:

[rueger-events-bot]

Addressed the latest review feedback:

• Moved camera control out of the Stream Source panel into a separate "Camera Control" sidebar panel.
• Kept custom CV-370 host/IP input in that panel, independent of the selected NDI stream.
• Stream Source now only forwards the selected NDI source endpoint to Camera Control for auto-detection.
• Updated combo boxes / camera host controls to shrink instead of forcing horizontal scrolling.
• Fixed branch CI failures caused by missing NDI SDK URL secrets in the fork by skipping packaging when those secrets are unavailable.

Verification:

• git diff --check
• QT_QPA_PLATFORM=offscreen ctest --test-dir /root/workspace/onpoint-build --output-on-failure -R marshall_cv370_controller
• Latest fork workflow run now succeeds/skips packaging cleanly when NDI SDK URL secrets are absent.

[rueger-events-bot]

Superseded by #4, recreated from the upstream hrueger/onpoint branch so GitHub Actions run in the repository context.