feat(app): add composition root

app/app.ts

@@ -0,0 +1,16 @@
+import { createCommandRegistry } from "@commands/registry";
+import { viewportCommands } from "@commands/viewport";
+import { createInitialAppState } from "@editor/initial-state";
+import { createAppStore } from "@editor/store";
+
+export type ImageStudioApp = ReturnType<typeof createImageStudioApp>;
+
+export function createImageStudioApp(options?: { documentName?: string }) {
+  const registry = createCommandRegistry([...viewportCommands]);
+  const store = createAppStore(createInitialAppState(options?.documentName), registry);
+
+  return {
+    registry,
+    store,
+  };
+}