feat: add module schema discovery and validation

templates/module/src/schema/index.ts

@@ -0,0 +1,14 @@
+import { createModuleTable, defineModuleSchema } from "@ekklesia/module-sdk";
+import { text, uuid } from "drizzle-orm/pg-core";
+
+const moduleTable = createModuleTable("example");
+
+export const records = moduleTable("records", {
+  id: uuid("id").primaryKey(),
+  value: text("value").notNull(),
+});
+
+export default defineModuleSchema({
+  moduleId: "example",
+  tables: { records },
+});