Git-ignore the arduino-cli.exe on Windows. (#891)

When I build the CLI on Windows, I do not want to see the executable as
an outgoing Git change. Same as on POSIX.

Signed-off-by: Akos Kitta <[email protected]>

Author: kittaakos

.gitignore

@@ -1,5 +1,5 @@
 /debug
-/arduino-cli
+/arduino-cli*
 /main
 /.vscode/
 /cmd/formatter/debug.test