Fixed cyclic dependency issue by creating types module which contains shared struct definations

Author: PythonHacker24

internal/types/transaction.go

@@ -0,0 +1,20 @@
+package types
+
+/* transaction represents a permission management transaction */
+type Transaction struct {
+	ID          string
+	UserID      string
+	Action      string
+	Resource    string
+	Permissions string
+	Status      string
+	Timestamp   string
+}
+
+/* represents the result of a processed transaction */
+type TransactionResult struct {
+	Transaction Transaction
+	Success     bool
+	Error       string
+	Timestamp   string
+}