feat(player): add embedded-mpv player for macOS as experimental feature

- Introduced tooling for building and staging the macOS `libmpv` runtime for IPTVnator's embedded MPV player.
- Added `build-macos-runtime.mjs` for building an LGPL-compatible runtime from source.
- Created `stage-macos-runtime.mjs` for staging the built runtime artifacts.
- Implemented validation for the packaged embedded MPV runtime in `electron-after-pack.cjs` and `embedded-mpv-macos.cjs`.
- Updated packaging scripts to ensure the embedded MPV runtime is correctly integrated and validated during the build process.
- Added README files to document the expected layout and usage for the embedded MPV runtime artifacts.

Entire-Checkpoint: c6e522b4276c

apps/web/src/app/settings/settings.component.spec.ts

@@ -402,7 +402,7 @@ describe('SettingsComponent', () => {
             });
         });
 
-        /* it('hides the embedded mpv option when the desktop support probe reports unsupported', async () => {
+        it('hides the embedded mpv option when the desktop support probe reports unsupported', async () => {
             window.electron = {
                 ...window.electron,
                 getEmbeddedMpvSupport: jest.fn().mockResolvedValue({
@@ -416,9 +416,9 @@ describe('SettingsComponent', () => {
             await fixture.whenStable();
 
             expect(
-                component.players().some(
-                    (player) => player.id === VideoPlayer.EmbeddedMpv
-                )
+                component
+                    .players()
+                    .some((player) => player.id === VideoPlayer.EmbeddedMpv)
             ).toBe(false);
         });
 
@@ -435,9 +435,9 @@ describe('SettingsComponent', () => {
             await fixture.whenStable();
 
             expect(
-                component.players().some(
-                    (player) => player.id === VideoPlayer.EmbeddedMpv
-                )
+                component
+                    .players()
+                    .some((player) => player.id === VideoPlayer.EmbeddedMpv)
             ).toBe(true);
         });
 
@@ -458,9 +458,9 @@ describe('SettingsComponent', () => {
             expect(component.settingsForm.value).toEqual(DEFAULT_SETTINGS);
             expect(window.electron.getEmbeddedMpvSupport).toHaveBeenCalled();
             expect(
-                component.players().some(
-                    (player) => player.id === VideoPlayer.EmbeddedMpv
-                )
+                component
+                    .players()
+                    .some((player) => player.id === VideoPlayer.EmbeddedMpv)
             ).toBe(false);
 
             resolveSupport!({
@@ -470,11 +470,11 @@ describe('SettingsComponent', () => {
             await fixture.whenStable();
 
             expect(
-                component.players().some(
-                    (player) => player.id === VideoPlayer.EmbeddedMpv
-                )
+                component
+                    .players()
+                    .some((player) => player.id === VideoPlayer.EmbeddedMpv)
             ).toBe(true);
-        }); */
+        });
     });
 
     describe('Version check', () => {