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/manifest/index.ts

@@ -0,0 +1,35 @@
+import { setupManifest } from '@start9labs/start-sdk'
+import { long, short } from './i18n'
+
+export const manifest = setupManifest({
+  id: 'spark-control',
+  title: 'Spark Control',
+  license: 'MIT',
+  packageRepo: 'https://github.com/grant/spark-control',
+  upstreamRepo: 'https://github.com/grant/spark-control',
+  marketingUrl: 'https://github.com/grant/spark-control',
+  donationUrl: 'https://github.com/grant/spark-control',
+  docsUrls: [],
+  description: { short, long },
+  volumes: ['main'],
+  images: {
+    'spark-control': {
+      source: {
+        dockerBuild: {
+          dockerfile: '../image/Dockerfile',
+          workdir: '..',
+        },
+      },
+      arch: ['x86_64', 'aarch64'],
+    },
+  },
+  alerts: {
+    install: null,
+    update: null,
+    uninstall: null,
+    restore: null,
+    start: null,
+    stop: null,
+  },
+  dependencies: {},
+})