Enable crosshair cursor for hotspot select

Signed-off-by: Justin Georgi <justin.georgi@gmail.com>

modules/glmv.js

@@ -9,6 +9,7 @@ readyAddHotspot = function() {
     previewMv.one('click', clickAddHotspot)
     previewMv.addClass('AddingHotspot')
     previewMv[0].disableTap = true
+    previewMv[0].toggleAttribute('camera-controls')
 }
 
 /**
@@ -25,6 +26,7 @@ clickAddHotspot = function(e) {
     let hsPosition = null
     let targetModel = previewMv[0]
     targetModel.disableTap = false
+    targetModel.toggleAttribute('camera-controls')
     if (targetModel) {
         hsPosition = targetModel.positionAndNormalFromPoint(e.clientX, e.clientY)
     }