Add workflow schema with zod (#22)

* Safe parse with zod

* Fix zod issue

* Fix all validation errors

* nit

* Add tests

* Add color fields

* Passthrough

package-lock.json

@@ -7,6 +7,10 @@
     "": {
       "name": "comfyui-frontend",
       "version": "0.0.0",
+      "dependencies": {
+        "zod": "^3.23.8",
+        "zod-validation-error": "^3.3.0"
+      },
       "devDependencies": {
         "@babel/core": "^7.24.7",
         "@babel/preset-env": "^7.22.20",
@@ -8694,6 +8698,25 @@
       "funding": {
         "url": "https://github.com/sponsors/sindresorhus"
       }
+    },
+    "node_modules/zod": {
+      "version": "3.23.8",
+      "resolved": "https://registry.npmjs.org/zod/-/zod-3.23.8.tgz",
+      "integrity": "sha512-XBx9AXhXktjUqnepgTiE5flcKIYWi/rme0Eaj+5Y0lftuGBq+jyRu/md4WnuxqgP1ubdpNCsYEYPxrzVHD8d6g==",
+      "funding": {
+        "url": "https://github.com/sponsors/colinhacks"
+      }
+    },
+    "node_modules/zod-validation-error": {
+      "version": "3.3.0",
+      "resolved": "https://registry.npmjs.org/zod-validation-error/-/zod-validation-error-3.3.0.tgz",
+      "integrity": "sha512-Syib9oumw1NTqEv4LT0e6U83Td9aVRk9iTXPUQr1otyV1PuXQKOvOwhMNqZIq5hluzHP2pMgnOmHEo7kPdI2mw==",
+      "engines": {
+        "node": ">=18.0.0"
+      },
+      "peerDependencies": {
+        "zod": "^3.18.0"
+      }
     }
   }
 }