chore: add package manifest, config source-of-truth and tsconfig

- package.json with pi section (extensions/skills/prompts) and Pi libs as peerDependencies (*)
- config/company.json as the single source of truth (values are TODO, gitHost set)
- tsconfig.json for optional local typecheck

config/company.json

@@ -0,0 +1,12 @@
+{
+  "gitHost": "git.codelab.vc",
+  "trackerUrl": "TODO",
+  "docsUrl": "TODO",
+  "repoMap": "TODO: где какой код лежит",
+  "rules": [
+    "не коммитить секреты",
+    "не пушить в main",
+    "MR обязателен"
+  ],
+  "remoteConfigUrl": null
+}