feat: add schema features and type defs

Author: coffeeorgreentea

grimoire/modules/schemas/src/features/index.ts

@@ -0,0 +1,5 @@
+export const schemaFeatures = {
+    schemas: "schemas",
+  } as const;
+  
+  export type SchemaFeatures = typeof schemaFeatures;

grimoire/modules/schemas/src/types/index.d.ts

@@ -0,0 +1,15 @@
+import type { z } from 'zod'
+export type AnyZodSchema = z.ZodTypeAny
+
+export interface SchemaDefinition<T extends AnyZodSchema = AnyZodSchema> {
+  schema: T
+  description?: string
+}
+
+export type SchemaRegistry = Map<string, SchemaDefinition>
+
+declare module 'nitro/types' {
+  interface NitroApp {
+    schemaRegistry: SchemaRegistry
+  }
+}