feat(plugins): add JavaScript plugin system with overlay panel (#303)

src/main/runtime/app-lifecycle-main-cleanup.test.ts

@@ -52,6 +52,7 @@ function buildCleanupDeps(overrides: Partial<BuilderDeps> = {}) {
     cleanupRemoteMediaWindows: noop,
     cleanupJellyfinSubtitleCache: noop,
     stopDiscordPresenceService: noop,
+    unloadPlugins: noop,
     ...overrides,
   });
 }