States highlighting and fixes

• The current input device could be lost after detachment
• The name of the current input device in the preferences window.
• Dimming the icon when the mic is muted
• Hightlighing the icon when the mic is running

Fix for High Sierra

v1.1

Fix for High Sierra

1.0

macOS menu bar application for the mic mute/unmute

• mute/unmute with single click on menu bar icon
• right click to show the preferences
• shortcut for mute/unmute
• walkie-talkie mode – mic will be active only while shortcut is pressed