chore(packages): replace helpers with standalone chroma-lexers and enrich shared

- Replace helpers dispatcher pattern with standalone chroma-lexers package
- Add runCommand, fromRoot, consola re-export to shared
- Update versioning and integration to use shared utilities
- Shorten dev version format: base36 timestamp, no hash
- Rename eslint.config.js to eslint.config.ts (add jiti)
- Add README.md to each package

eslint.config.ts

@@ -0,0 +1,14 @@
+import antfu from '@antfu/eslint-config'
+
+export default antfu({
+  typescript: true,
+  ignores: [
+    'node_modules/**',
+    'assets/lib/**',
+    'public/**',
+    'layouts/**/*.json',
+    'layouts/**/*.xml',
+    'layouts/**/*.md',
+    '**/*.template.*',
+  ],
+})