feat(colorlcd): Special Function to set main screen (#2160)

* Special Function to set main screen (#2135)

* chore: Add new SF to LUA constants list

* Companion support

* Formatting

* get rid of magic number

* Add function to get the number of custom screens

* Change screen numbering from 0-based to 1-based.

* Allow SetScreen custom function for Color LCD only

* add range protection

* cleanup

* yet, range protection once again

* fix: paintSpecialFunctionLine can't alter SF param data

* Fix screen initialization in companion

* move screen switching to the UI

* Trigger view change from guiMain()

* chore: Change "SET" to "Set" for consistency

* fix: Somehow missed extra comma in `TW`

Co-authored-by: Peter Feerick <peter.feerick@gmail.com>
Co-authored-by: elecpower <neilh713@tpg.com.au>
Co-authored-by: Raphael Coeffic <raphael.coeffic@frafos.com>

radio/src/main.cpp

@@ -25,6 +25,7 @@
 #if defined(LIBOPENUI)
   #include "libopenui.h"
   #include "gui/colorlcd/LvglWrapper.h"
+  #include "gui/colorlcd/view_main.h"
 #endif
 
 #if defined(CLI)
@@ -376,6 +377,18 @@ void guiMain(event_t evt)
   LvglWrapper::instance()->run();
   MainWindow::instance()->run();
 
+  bool mainViewRequested = (mainRequestFlags & (1u << REQUEST_MAIN_VIEW));
+  if (mainViewRequested) {
+    auto viewMain = ViewMain::instance();
+    if (g_model.view < viewMain->getMainViewsCount()) {
+      viewMain->setCurrentMainView(g_model.view);
+      storageDirty(EE_MODEL);
+    } else {
+      g_model.view = viewMain->getCurrentMainView();
+    }
+    mainRequestFlags &= ~(1u << REQUEST_MAIN_VIEW);
+  }
+  
   bool screenshotRequested = (mainRequestFlags & (1u << REQUEST_SCREENSHOT));
   if (screenshotRequested) {
     writeScreenshot();