Changelog:

• Apply Qt translations for all OS.
• Use circle-icons for flags.
• Check if the system tray available.
• Enable global shortcuts by default only if supported.
• Fix proxy type settings.

Signed-off-by: Algent Albrahimi <algent@protonmail.com>

• Translate a few sentences using GUI.
• Check translations with Google, Yandex and Bing.
• Translate using cli e.g. crow -t it "This is a test"
• Translate using keyborad shortcut.
• Use text speaking, in different languages.
• Translate a text in screen area using OCR.