Add clipboard write permission and iframe attribute

Added 'clipboardWrite' to extension permissions in manifest.json and set 'allow' attribute to 'clipboard-write' on the info menu iframe in content.ts to enable clipboard operations.

manifest/manifest.json

@@ -17,7 +17,8 @@
     "permissions": [
         "storage",
         "scripting",
-        "unlimitedStorage"
+        "unlimitedStorage",
+        "clipboardWrite"
     ],
     "options_ui": {
         "page": "options/options.html",

src/content.ts

@@ -2205,6 +2205,7 @@ function openInfoMenu() {
     popup.id = "sponsorBlockPopupContainer";
 
     const frame = document.createElement("iframe");
+    frame.allow = "clipboard-write";
     frame.width = "374";
     frame.height = "500";
     frame.style.borderRadius = "12px";