Add drizzle migration files and remove drizzle/ from .gitignore

The Docker build was failing because drizzle/ was in .gitignore,
so migration files (meta/_journal.json) were never committed.
Generated initial migration from schema.

Co-authored-by: Shelley <shelley@exe.dev>

drizzle/0000_goofy_captain_midlands.sql

@@ -0,0 +1,19 @@
+CREATE TABLE `annotations` (
+	`id` integer PRIMARY KEY AUTOINCREMENT NOT NULL,
+	`timestamp` integer NOT NULL,
+	`label_type` text NOT NULL,
+	`geometry` text,
+	`color` text DEFAULT '#3b82f6',
+	`created_at` integer NOT NULL
+);
+--> statement-breakpoint
+CREATE TABLE `candles` (
+	`id` integer PRIMARY KEY AUTOINCREMENT NOT NULL,
+	`time` integer NOT NULL,
+	`open` real NOT NULL,
+	`high` real NOT NULL,
+	`low` real NOT NULL,
+	`close` real NOT NULL
+);
+--> statement-breakpoint
+CREATE UNIQUE INDEX `candles_time_unique` ON `candles` (`time`);