Add feedback button with unit and UI tests

[evatechnosoft]

Summary

• add a Give Feedback button to the simulator UI and FreeRTOS path
• add shared feedback message logic for deterministic behavior
• add unit test for message formatting
• add LVGL UI integration test for click behavior
• update CMake test wiring so logic test always runs and UI test runs when SDL2 is available

Validation

• feedback_logic_test passes
• feedback_ui_test passes

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Summary by cubic

Add a “Give Feedback” button to the LVGL UI (simulator and FreeRTOS) with deterministic message formatting and click behavior. Update the build to run logic tests always and UI tests when SDL2 is available.

• New Features

  • Added feedback_add_button: creates a status label and “Give Feedback” button; clicks update the label with “Thanks for your feedback! (n)”.
  • Integrated in simulator (lv_demo_widgets) and FreeRTOS hello world screen.

• Tests

  • feedback_logic_test validates message formatting.
  • feedback_ui_test simulates button clicks and asserts label updates; built and run only if SDL2 is found.
  • CMake: enable_testing, always build/run logic test; make SDL2 optional and skip simulator target when missing.

^{Written for commit c2a0a9d. Summary will update on new commits.}

[cubic-dev-ai]

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