feat: add keycloakify json schema

scripts/generate-json-schema.ts

@@ -0,0 +1,14 @@
+import fs from "fs";
+import path from "path";
+import zodToJsonSchema from "zod-to-json-schema";
+import { zParsedPackageJson } from "../src/bin/keycloakify/parsedPackageJson";
+
+const jsonSchemaName = "keycloakifyPackageJsonSchema";
+const jsonSchema = zodToJsonSchema(zParsedPackageJson, jsonSchemaName);
+
+const baseProperties = {
+    // merges package.json schema with keycloakify properties
+    "allOf": [{ "$ref": "https://json.schemastore.org/package.json" }, { "$ref": jsonSchemaName }]
+};
+
+fs.writeFileSync(path.join(process.cwd(), "keycloakify-json-schema.json"), JSON.stringify({ ...baseProperties, ...jsonSchema }, null, 2));