Add an enabled property to redirects.

source/background-scripts/initialize.ts

@@ -39,7 +39,7 @@ browser.webNavigation.onBeforeNavigate.addListener(async (details) => {
     await browser.storage.local.get(),
   )) {
     const redirect = parseRedirect(parameters, id);
-    if (redirect === undefined) {
+    if (redirect === undefined || !redirect.parameters.enabled) {
       continue;
     }
 

source/redirect/base.ts

@@ -15,6 +15,7 @@ export function narrowRedirectType(value: string): value is RedirectType {
 }
 
 export type RedirectParameters = {
+  enabled: boolean;
   matcherType: MatcherType;
   matcherValue: string;
   redirectType: RedirectType;