feat: enable builtin spellchecker (#20692)

* chore: add code required to use chromes spellchecker

* chore: fix linting

* chore: manifests needs buildflags now

* chore: add dictionarySuggestions to the context menu event when the spellchecker is active

* chore: enable by default for windows builds

* chore: add patch to remove incognito usage in the spellchecker

* chore: add dependencies on spellcheck common and flags

* chore: conditionally include spell check panel impl

* chore: fix deps for spellcheck feature flags

* chore: add patch for electron resources

* chore: add dependency on //components/language/core/browser

* chore: patches to make hunspell work on windows

* build: collect hunspell dictionaries into a zip file and publish

* chore: clean up patches

* chore: add docs and set spell checker url method

* chore: fix error handling

* chore: fix hash logic

* build: update hunspell filename generator

* fix: default spellchecker list to the current system locale if we can

* docs: document the language getter

* chore: patch IDS_ resources for linux builds

* feat: add spellcheck webpref flag to disable the builtin spellchecker

* chore: fix docs typo

* chore: clean up spellchecker impl as per feedback

* remove unneeded deps

shell/browser/api/atom_api_session.h

@@ -88,6 +88,11 @@ class Session : public gin_helper::TrackableObject<Session>,
   v8::Local<v8::Value> NetLog(v8::Isolate* isolate);
   void Preconnect(const gin_helper::Dictionary& options,
                   gin_helper::Arguments* args);
+#if BUILDFLAG(ENABLE_BUILTIN_SPELLCHECKER)
+  base::Value GetSpellCheckerLanguages();
+  void SetSpellCheckerLanguages(gin_helper::ErrorThrower thrower,
+                                const std::vector<std::string>& languages);
+#endif
 
 #if BUILDFLAG(ENABLE_ELECTRON_EXTENSIONS)
   void LoadChromeExtension(const base::FilePath extension_path);