chore: add storage logger and handler in /int

backend/internal/storage/migrations.go

@@ -0,0 +1,10 @@
+package storage
+
+const Migrations = `
+CREATE TABLE IF NOT EXISTS posts(
+	id INTEGER PRIMARY KEY AUTOINCREMENT 	
+	title TEXT NOT NULL
+	content TEXT NOT NULL
+	CREATED_AT DATETIME DEFAULT CURRENT_TIMESTAMP
+	);
+`