Signed binaries / crosshair/ quality of life improvements

Version 0.3.9.0

General:

• enabled locking and unlocking reference pose/cor position in VR playspace via keyboard shortcut
• continue using last known reference tracker pose until connection timeout
• signed binaries to avoid issues with anti-cheat software

Vive Tracker

• added dedicated config key for role (potentially requires edit of config file on update!)

Virtual Tracker:

• enabled COR calibration outside of neutral rig position
• enabled use of right motion controller for COR manipulation
• changed motion controller buttons for COR manipulation to avoid accidental trigger activation

Graphical Overlay:

• added optional crosshair to help with forward calibration
• display current tracker pose while mc is off

Bugfixes:

• corrected translation values in recordings to match local rig reference coordinate system