Add macOS Touch Bar support

[sandeepmistry]

These changes add Touch Bar support to the IDE using the JTouchBar library. Version 0.2.0 snapshot was used because of Thizzer/jtouchbar#10.

The current behaviour is to map the Editor toolbar items to the Touch Bar. The rollover state icon is used by default. When a button is pressed it goes to the active state and uses the yellow icons, the state is also synced with the toolbar state in the UI.

[ArduinoBot]

✅ Build completed.

Please test this code using one of the following:

⬇️ http://downloads.arduino.cc/javaide/pull_requests/arduino-PR-8156-BUILD-798-linux32.tar.xz
⬇️ http://downloads.arduino.cc/javaide/pull_requests/arduino-PR-8156-BUILD-798-linux64.tar.xz
⬇️ http://downloads.arduino.cc/javaide/pull_requests/arduino-PR-8156-BUILD-798-windows.zip
⬇️ http://downloads.arduino.cc/javaide/pull_requests/arduino-PR-8156-BUILD-798-macosx.zip
⬇️ http://downloads.arduino.cc/javaide/pull_requests/arduino-PR-8156-BUILD-798-linuxarm.tar.xz

ℹ️ The linuxarm build is still experimental and may not be always available.

[don]

This looks good with macOS 10.13.6 (17G65) running on MacBook Pro (15-inch, 2016)

[sandeepmistry]

The changes in 25cadcb allow customization via Arduino -> Customize Touch Bar ....

[ArduinoBot]

✅ Build completed.

Please test this code using one of the following:

⬇️ http://downloads.arduino.cc/javaide/pull_requests/arduino-PR-8156-BUILD-799-linux32.tar.xz
⬇️ http://downloads.arduino.cc/javaide/pull_requests/arduino-PR-8156-BUILD-799-linux64.tar.xz
⬇️ http://downloads.arduino.cc/javaide/pull_requests/arduino-PR-8156-BUILD-799-windows.zip
⬇️ http://downloads.arduino.cc/javaide/pull_requests/arduino-PR-8156-BUILD-799-macosx.zip
⬇️ http://downloads.arduino.cc/javaide/pull_requests/arduino-PR-8156-BUILD-799-linuxarm.tar.xz

ℹ️ The linuxarm build is still experimental and may not be always available.

[sandeepmistry]

Screenshot of customization screen:

[don]

@sandeepmistry customization of touch bar looks good

[ArduinoBot]

✅ Build completed.

Please test this code using one of the following:

⬇️ http://downloads.arduino.cc/javaide/pull_requests/arduino-PR-8156-BUILD-800-linux32.tar.xz
⬇️ http://downloads.arduino.cc/javaide/pull_requests/arduino-PR-8156-BUILD-800-linux64.tar.xz
⬇️ http://downloads.arduino.cc/javaide/pull_requests/arduino-PR-8156-BUILD-800-windows.zip
⬇️ http://downloads.arduino.cc/javaide/pull_requests/arduino-PR-8156-BUILD-800-macosx.zip
⬇️ http://downloads.arduino.cc/javaide/pull_requests/arduino-PR-8156-BUILD-800-linuxarm.tar.xz

ℹ️ The linuxarm build is still experimental and may not be always available.