Refactor component terminology to programs in config and manifest

- Updated the terminology from "components" to "programs" across the codebase, including in config loading, saving, and manifest specifications.
- Introduced a new `stacks.py` file to handle lifecycle actions for development stacks, implementing handlers for Python and React Vite stacks.
- Adjusted tests to reflect the new program structure and ensure proper functionality.
- Revised documentation to align with the new terminology and structure, ensuring clarity on the purpose and configuration of programs, services, and jobs.

app/src/router/routes.tsx

@@ -20,7 +20,7 @@ export const router = createBrowserRouter([
     element: <ScheduledDetailPage />,
   },
   {
-    path: "/components/:name",
+    path: "/programs/:name",
     element: <ComponentDetailPage />,
   },
   {