Introduce native mouse/keyboard actions and Electron browser integration

[do-gamer]

1. Implemented native mouse and keys actions which sends via:

   • postActions(long... actions)
   • pasteText(String text, long... actions)

   Related to https://github.com/darkbot-reloaded/DarkBot/blob/master/src/main/java/eu/darkbot/api/utils/NativeAction.java

   Summary
   MouseClick: First try native action via X11 for better reliability. Fall back to legacy flash IPC method.
   MouseMove: Native action via X11.
   MouseDown: Native action via X11.
   MouseUp: Native action via X11.
   MouseScroll: Native action via X11.
   KeyClick: First try legacy flash IPC method, works a bit better. Fall back to sending command to browser.
   KeyDown: Sending command to browser.
   KeyUp: Sending command to browser.
   SendText: Sending command to browser to type text.

2. Implemented a small red marker to visualize where the bot clicks on the screen.
   
   Can be enabled/disabled via setCursorMarker(boolean enabled)

3. Added to repository the Electron browser that is used for the game window

   • implements support browser commands for key actions and type text
   • renamed aplication to darkbot_browser_linux.AppImage
   • fixed loader animation
   • updated title and added version number
     

4. Added build script

5. Improved recovery logic when Flash failed and improved socket connection with browser

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Related PR for Darkbot darkbot-reloaded/DarkBot#449