use enums for rules actions

src/constants/rules-actions.js

@@ -0,0 +1,25 @@
+/**
+ * @typedef {'add' | 'remove'} RulesAction
+ */
+
+/**
+ * Individual rules action constants
+ */
+export const RULES_ACTIONS = {
+	ADD: 'add',
+	REMOVE: 'remove'
+};
+
+/**
+ * Special rules command (not a CRUD operation)
+ */
+export const RULES_SETUP_ACTION = 'setup';
+
+/**
+ * Check if a given action is a valid rules action
+ * @param {string} action - The action to check
+ * @returns {boolean} True if the action is valid, false otherwise
+ */
+export function isValidRulesAction(action) {
+	return Object.values(RULES_ACTIONS).includes(action);
+}