Fix sftp/ssh session bugs

Fixes

• Fix sfp download speed
• Fix ssh session create issue

New UI design

Feature

• Import new UI design
• Add pink theme

Support Sftp online editor

Feature

• Add sftp editor by codemirror

Fixes

• Fix ssh auth dailgo issue

Support session zoom in/out ops

Features

• Add session zoom in/out ops by shortcut Alt+ + or Alt + -

Fixes

• Fix global configure

Support session configure with simple mode

Feature

• Add session configure simple mode

Fixes

• Fix session tab display max width

Support configure session file location

Feature

• Add configure session file location in global config page
  

Support Session shortcut ops

Features

• Add shourtcut ops for SSH session

Fixes:

• Fix xterm webgl render issue
• Fix session Lock issue

Add ssh sessions split display function

Features：

• Add ssh sessions split display function
• Add send keyboard input to all ssh sessions function
• Add ssh session lock function

Allow ssh reconnect by enter keydown when disconnect by server

Feature

• Upgrade xtermjs and electron to latest version
• Allow ssh recnnect by enter keydown

Fixes

• Fix session find auto focuse
• Fix ssh cant input chinese by sogou

Support mutil select files to deleted in sftp

Features

• Support mutil select files to deleted in sftp
• Add dejavu-sans-mono as default fontfamily