[golang] implement ship refueling

golang/pkg/database/transactions.go

@@ -0,0 +1,19 @@
+package database
+
+import (
+	"encoding/json"
+	"fmt"
+
+	"git.adyxax.org/adyxax/spacetraders/golang/pkg/model"
+)
+
+func (db *DB) AppendTransaction(transaction *model.Transaction) error {
+	data, err := json.Marshal(transaction)
+	if err != nil {
+		return fmt.Errorf("failed to marshal transaction: %w", err)
+	}
+	if _, err := db.Exec(`INSERT INTO transactions(data) VALUES (json(?));`, data); err != nil {
+		return fmt.Errorf("failed to append transaction: %w", err)
+	}
+	return nil
+}