Add Accessibility issue type to the issue form

.github/ISSUE_TEMPLATE/bug-report.yml

@@ -12,6 +12,7 @@ body:
         - Engraving bug (incorrect score rendering)
         - UX/Interaction bug (incorrect behaviour)
         - UI bug (incorrect info or interface appearance)
+        - Accessibility issue (e.g. for keyboard-only or screen reader users)
         - VST bug
         - Muse Sounds bug
         - General playback bug

.github/issue_add_label_config.yml

@@ -6,6 +6,8 @@ engraving:
     - "UX/Interaction bug \\(incorrect behaviour\\)"
 UI:
     - "UI bug \\(incorrect info or interface appearance\\)"
+accessibility:
+    - "Accessibility issue \\(e\\.g\\. for keyboard-only or screen reader users\\)"
 VST:
     - "VST bug"
 "Muse Sounds":