Add comment to database()

backend/db.go

@@ -8,6 +8,10 @@ import (
 	_ "modernc.org/sqlite"
 )
 
+// database
+//
+// Manage database connection to ./app.db
+// Handles CRUD
 func database() *sql.DB {
 	db, err := sql.Open("sqlite", "./app.db")
 	if err != nil {