protontricks: add page (#4475)

pages/linux/protontricks.md

@@ -0,0 +1,20 @@
+# protontricks
+
+> A simple wrapper that does winetricks things for Proton enabled games, requires Winetricks.
+> More information: <https://github.com/Matoking/protontricks>.
+
+- Show the protontricks help message:
+
+`protontricks`
+
+- Run the protontricks GUI:
+
+`protontricks --gui`
+
+- Run winetricks for a specific game:
+
+`protontricks {{appid}} {{winetricks_args}}`
+
+- Run a command within a games installation directory:
+
+`protontricks -c {{command}} {{appid}}`