feat(api): create template

Add template table to the database
Create controller function to check if user has template, and create it
in the database
Made universal jwt.Claims of user data retrieval function

frontend/src/routes/templates/create.tsx

@@ -11,7 +11,11 @@ export const Route = createFileRoute("/templates/create")({
 });
 
 const TemplateSchema = z.object({
-    name: z.string().nonempty("Name is required"),
+    name: z
+        .string()
+        .nonempty("Name is required")
+        .min(2, "Name is too short")
+        .max(50, "Name is too long (max 50)"),
     template: z.string().nonempty("Template is required"),
 });