refactor: Move pnpm configuration to pnpm-workspace.yaml

- Removed the pnpm configuration section from package.json.
- Created a new pnpm-workspace.yaml file to manage onlyBuiltDependencies.
- This change helps in organizing

Author: ryota-murakami

package.json

@@ -73,15 +73,6 @@
     "vite-plugin-svgr": "^4.3.0",
     "vitest": "^3.2.0"
   },
-  "pnpm": {
-    "onlyBuiltDependencies": [
-      "@swc/core",
-      "@tailwindcss/oxide",
-      "esbuild",
-      "msw",
-      "unrs-resolver"
-    ]
-  },
   "volta": {
     "node": "22.17.0"
   }

pnpm-workspace.yaml

@@ -0,0 +1,6 @@
+onlyBuiltDependencies:
+  - '@swc/core'
+  - '@tailwindcss/oxide'
+  - esbuild
+  - msw
+  - unrs-resolver