Add new behavior for long keypress

[hekra01]

When processing:
/session/:sessionId/keys
/session/:sessionId/element/:id/value
Current behavior:

• first KeyPress event isAutoRepeat = false
• last KeyRelease event isAutoRepeat = false
• all intermediary events isAutoRepeat = true

New behavior wanted:

• first KeyPress event isAutoRepeat = false
• last KeyRelease event isAutoRepeat = false
• all intermediary events isAutoRepeat = true and only of type KeyPress (no intermediary KeyRelease)

[hekra01]

Fixed by a1a30e4
Added new WD build option WD_CONFIG_ONE_KEYRELEASE. If set WD will do this on long key press;

• first KeyPress event isAutoRepeat = false
• last KeyRelease event isAutoRepeat = false
• all intermediary events isAutoRepeat = true and
• No intermediary KeyRelease