Add StartOS 0.4 package scaffold (manifest, main, interfaces, 2 actions)

- package/Makefile + s9pk.mk + package.json + tsconfig.json
- startos/manifest: dockerBuild source pointing at ../image/Dockerfile
- startos/main: reads /data/config.yaml reactively, passes env vars to container
- startos/interfaces: binds port 9999 as HTTP UI
- startos/actions: showPublicKey (read /data/ssh/id_ed25519.pub), configureSparks
- TS + JS bundle compile clean (tsc --noEmit, ncc build)

package/startos/versions/v0_1_0.ts

@@ -0,0 +1,12 @@
+import { VersionInfo, IMPOSSIBLE } from '@start9labs/start-sdk'
+
+export const v0_1_0 = VersionInfo.of({
+  version: '0.1.0:0',
+  releaseNotes: {
+    en_US: 'Initial release: swap UI, status, health for Parakeet/Magpie.',
+  },
+  migrations: {
+    up: async ({ effects }) => {},
+    down: IMPOSSIBLE,
+  },
+})