Uniterm2 v0.12

In this version...

• Tweaks a lot on the tabs!
  • Added icon display for each launched shell.
  • Better tabs display even too many of them are opened.
• Add options button at the corner, which is a shortcut of typing uniterm --config inside terminal.
• Instead of click directly, now the links will be activated only when ctrl key is hold (Just like in VSCode),
  or it blocks the highlighting function within links.
• Minor bug fixes