feat: implement user signup functionality with session management

src/routes/signup/+page.server.ts

@@ -0,0 +1,22 @@
+import { db } from '$lib/server/db';
+import { userTable } from '$lib/server/db/schema';
+import type { Actions } from './$types';
+
+export const actions = {
+	default: async ({ request }) => {
+		const formData = await request.formData();
+        const name = formData.get('name');
+        const email = formData.get('email');
+		const password = formData.get('password');
+
+        // TODO: Implement data validation.
+
+        const userRecord = await db.insert(userTable).values({
+            name: name as string,
+            email: email as string,
+            password: password as string
+        }).returning();
+
+        // TODO: Handle post-signup logic (e.g., redirect, session creation).
+	}
+} satisfies Actions;