feat: add audio clip annotation view for dialect rating

drizzle/0006_polite_moondragon.sql

@@ -0,0 +1,10 @@
+CREATE TABLE `annotation` (
+	`id` integer PRIMARY KEY AUTOINCREMENT NOT NULL,
+	`dataset_entry_id` integer NOT NULL,
+	`user_id` text NOT NULL,
+	`rating` integer NOT NULL,
+	`created_at` integer DEFAULT (unixepoch()) NOT NULL,
+	FOREIGN KEY (`dataset_entry_id`) REFERENCES `dataset_entry`(`id`) ON UPDATE no action ON DELETE no action
+);
+--> statement-breakpoint
+CREATE UNIQUE INDEX `annotation_user_entry_idx` ON `annotation` (`user_id`,`dataset_entry_id`);