HLAE Overlay Beta (2.187.1-beta1.2)

Merged with HLAE 2.185.15 Commit 580aac6

-Added record path file browser selection
-Added DPI scaling setting and made window size content aware
-Added depth stream record settings
-Refactored main GUI window in tab sections
-Added Save/Load Campath with file browser
-Clicking/Box-Selecting keyframes in the sequencer will "mirv_campath select" them now
-Added anchor editing to gizmo to move selected keyframes as bulk relative to selected anchor