Reset-ASIO button + checkbox tick/untick sounds (parts 1-2 of the cue/preferences overhaul)

Part 1 - "Uncheck all inputs and outputs" button now also resets the ASIO driver to "(none)":
renamed to say so, and UncheckAllDevices sets asioDriverBox to row 0 for a full clean
WASAPI-only, nothing-selected state.

Part 2 - checkbox tick/untick sounds: every checkbox toggle anywhere in RemSound now plays a
short cue (check.wav on tick, uncheck.wav on untick) - instant feedback on which way a box
went, especially in the inputs/outputs lists. New CheckSoundService + two machine-wide cues
(CheckboxOn/Off) with the usual numbered-variant + Preferences treatment. Hooked from
AccessibleCheckBox.OnCheckedChanged and the device lists' WireCheckedListAccessibility, both
gated on the control being Focused so a genuine user toggle clicks but bulk programmatic
(un)checking (profile load, "uncheck all") stays silent. Reloaded at startup and on cue change.

Tests + manual updated; .sfk byproducts cleared.

Remaining for the overhaul (next): tabbed Preferences (General / Audio cues / Startup behaviour /
Update settings), the cue-list redesign with a "none" option replacing per-cue checkboxes, moving
Startup behaviour out of the Options menu, and a front-most "missing sound file" error.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/RemSound.Core/AppConfig.cs

@@ -106,6 +106,9 @@ public sealed class AppConfig
     public bool EnableReceiveOffCue { get; set; } = true;
     public bool EnableHideCue { get; set; } = true;
     public bool EnableShowCue { get; set; } = true;
+    /// <summary>Tick / untick sounds played on every checkbox toggle anywhere in the app.</summary>
+    public bool EnableCheckboxOnCue { get; set; } = true;
+    public bool EnableCheckboxOffCue { get; set; } = true;
 
     /// <summary>Custom WAV overrides for the machine-wide cues above, keyed by cue id. The
     /// equivalent of <see cref="Profile.CustomCuePaths"/> but machine-wide, since these cues don't