Virtual Keyboard Class

**function to find a process by name and set its window to foreground**
**function PostMessage to directy sending keys to a process**
**function added to send keys (SendInput/SendKeys) to a window/process**
**function added to hold keys for a specific time period inside a
window/process**

**cut the hold function out the Keyboard.cs and added to
VirtualKeyboard.cs to easier the process**

all examples inside the script . Documentation will come soon.