input: text-input-v1 support (#1778)

support zwp_text_input_v1

---------

Co-authored-by: Mihai Fufezan <fufexan@protonmail.com>

src/helpers/WLClasses.hpp

@@ -297,8 +297,11 @@ struct SSwipeGesture {
     CMonitor*   pMonitor = nullptr;
 };
 
+struct STextInputV1;
+
 struct STextInput {
     wlr_text_input_v3* pWlrInput = nullptr;
+    STextInputV1*      pV1Input  = nullptr;
 
     wlr_surface*       pPendingSurface = nullptr;