Valve Index controller input bindings added / improved

Controller Input Fix

Thank you for playing Dive in Love VR.

This update adds additional controller bindings to improve PCVR controller compatibility.

Changes:

* Added Valve Index trigger input mapping for UI selection.
* Added additional Velve Index, Vive controller input mappings.
* Improved controller input handling in menus and dialogue scenes.

Valve Index and other PCVR headsets have not been fully tested yet, so please report any remaining input issues in the Bug Reports section.

Thank you for your support.