Add missing menu.UploadTool name definition

Author: silvanocerza

Diff for: boards.txt

@@ -6,6 +6,7 @@
 
 menu.BoardModel=Model
 menu.ESPModule=Module
+menu.UploadTool=Upload Tool
 menu.led=Builtin Led
 menu.baud=Upload Speed
 menu.xtal=CPU Frequency

Diff for: tools/boards.txt.py

@@ -1621,6 +1621,7 @@ def all_boards ():
     # With Arduino IDE 1.8.7 the order of the menu items will be honored from the tools pull down list.
     print('menu.BoardModel=Model')
     print('menu.ESPModule=Module')
+    print('menu.UploadTool=Upload Tool')
     print('menu.led=Builtin Led')
     print('menu.baud=Upload Speed')
     print('menu.xtal=CPU Frequency')