fix(scripts): add tsconfig.json — fixes pnpm typecheck failure

The scripts/ workspace member had no tsconfig.json, so 'tsc --noEmit'
printed help text and exited 1, breaking 'pnpm typecheck' across the
entire monorepo.

scripts/tsconfig.json

@@ -0,0 +1,10 @@
+{
+  "extends": "../tsconfig.base.json",
+  "compilerOptions": {
+    "outDir": "dist",
+    "rootDir": ".",
+    "noEmit": true
+  },
+  "include": ["*.ts"],
+  "exclude": ["node_modules", "dist"]
+}