feat: initial elysium idle game prototype

Sets up the full monorepo with pnpm workspaces. Includes shared types
package, Hono API with Discord OAuth/JWT auth, Prisma v6 + MongoDB
Atlas, and React + Vite frontend with game loop, five tabs, and
Discord-linked save/load.

tsconfig.json

@@ -0,0 +1,8 @@
+{
+  "extends": "@nhcarrigan/typescript-config",
+  "compilerOptions": {
+    "outDir": "./prod",
+    "rootDir": "."
+  },
+  "exclude": ["test/**/*.ts", "apps/**", "packages/**"]
+}