api/client: various (MenuEntry api stuff, agility/translate plugin stuff to use that) (#1748)

* Standardize MenuEntry methods, make MenuEntry events extend MenuEntry

* Make agility plugin only change entries it needs to

* Clean up chat translator by a lot, also implement cloneable instead of just adding a ranodm copy method smh

* actions: allow slash in PR title

* devtools: Fix checkstyle

* examineplugin: Fix tests

.github/workflows/build.yml

@@ -12,7 +12,7 @@ jobs:
         if: github.event_name == 'pull_request'
         uses: seferov/pr-lint-action@master
         with:
-          title-regex: '^([\w-]+): \w+'
+          title-regex: '^([\w-/]+): \w+'
 
   build:
     runs-on: windows-latest