chore: Add some translation strings + update helper script (#2328)

* fix: Update translation helper for LVGL changes
Also:
- make paths more OS agnostic
- auto-ignore `untranslated.h` since adding to all translations
- flag required parameter as required

* fix: Add more Label related translatable strings

* chore: Italian translations from @robustini
Also some minor formatting tidyup

* chore: Swedish translation from @ulfhedlund

* chore: Danish translation from @HThuren

radio/src/translations.cpp

@@ -133,6 +133,7 @@ const char STR_LOADINGMODEL[] = TR_LOADINGMODEL;
 const char STR_UNLABELEDMODEL[] = TR_UNLABELEDMODEL;
 const char STR_NAME[] = TR_NAME;
 const char STR_BITMAP[] = TR_BITMAP;
+const char STR_NO_PICTURE[] = TR_NO_PICTURE;
 const char STR_TIMER[] = TR_TIMER;
 const char STR_START[]  = TR_START;
 const char STR_ELIMITS[] = TR_ELIMITS;
@@ -340,7 +341,10 @@ const char STR_SELECT_MODE[]  = TR_SELECT_MODE;
 const char STR_CREATE_MODEL[] = TR_CREATE_MODEL;
 const char STR_FAVORITE_LABEL[] = TR_FAVORITE_LABEL;
 const char STR_NEW_MODEL[] = TR_NEW_MODEL;
+const char STR_INVALID_MODEL[] = TR_INVALID_MODEL;
 const char STR_EDIT_LABELS[] = TR_EDIT_LABELS;
+const char STR_MOVE_UP[] = TR_MOVE_UP;
+const char STR_MOVE_DOWN[] = TR_MOVE_DOWN;
 const char STR_DUPLICATE_MODEL[] = TR_DUPLICATE_MODEL;
 const char STR_COPY_MODEL[] = TR_COPY_MODEL;
 const char STR_MOVE_MODEL[] = TR_MOVE_MODEL;