feat: introduce web dashboard with multi-bot management

- add Discord OAuth2 authentication
- allow users to register their bots via token
- implement dynamic bot start/stop system
- store bots in database (multi-tenant)
- replace single-bot env setup with scalable architecture

packages/shared/package.json

@@ -0,0 +1,18 @@
+{
+  "name": "@saas/shared",
+  "version": "1.0.0",
+  "private": true,
+  "type": "module",
+  "main": "dist/index.js",
+  "types": "src/index.ts",
+  "exports": {
+    ".": {
+      "types": "./src/index.ts",
+      "default": "./dist/index.js"
+    }
+  },
+  "scripts": {
+    "build": "tsc -p tsconfig.json",
+    "typecheck": "tsc -p tsconfig.json --noEmit"
+  }
+}