feat(extensions): add chrome.i18n API (#22455)

* feat(extensions): implement chrome.i18n API

* refactor(extensions): use forward declaration for ScriptExecutor

* fix(extensions): add message filter to handle i18n GetMessageBundle

* test(extensions): add chrome.i18n tests

* fix(extensions): message filter lint error

* fix: remove exclusive test

* fix(extensions): format api feature arrays

Co-Authored-By: Jeremy Apthorp <nornagon@nornagon.net>

* fix(extensions): uncomment chrome.i18n usage in old extensions test

Co-authored-by: Jeremy Apthorp <nornagon@nornagon.net>

spec-main/fixtures/devtools-extensions/foo/panel.js

@@ -57,7 +57,7 @@ testStorage(function (
   const message = JSON.stringify({
     runtimeId: chrome.runtime.id,
     tabId: chrome.devtools.inspectedWindow.tabId,
-    i18nString: null, // chrome.i18n.getMessage('foo', ['bar', 'baz']),
+    i18nString: chrome.i18n.getMessage('foo', ['bar', 'baz']),
     storageItems: {
       local: {
         set: localForSet,