add user settings migration (#1917)

Author: Kitenite

apps/backend/supabase/migrations/0002_red_crusher_hogan.sql

@@ -0,0 +1,12 @@
+CREATE TABLE "user_settings" (
+	"id" uuid PRIMARY KEY NOT NULL,
+	"user_id" uuid NOT NULL,
+	"auto_apply_code" boolean DEFAULT true NOT NULL,
+	"expand_code_blocks" boolean DEFAULT true NOT NULL,
+	"show_suggestions" boolean DEFAULT true NOT NULL,
+	"show_mini_chat" boolean DEFAULT true NOT NULL,
+	CONSTRAINT "user_settings_user_id_unique" UNIQUE("user_id")
+);
+--> statement-breakpoint
+ALTER TABLE "user_settings" ENABLE ROW LEVEL SECURITY;--> statement-breakpoint
+ALTER TABLE "user_settings" ADD CONSTRAINT "user_settings_user_id_users_id_fk" FOREIGN KEY ("user_id") REFERENCES "public"."users"("id") ON DELETE cascade ON UPDATE cascade;