Prevent new hotspot name collisions

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

modules/glmv.js

@@ -132,7 +132,7 @@ clickAddHotspot = function(e) {
         hsOutput['data-orbit'] = `${orbitObj.theta.toFixed(2)}rad ${orbitObj.phi.toFixed(2)}rad ${orbitObj.radius.toFixed(2)}m`
         let targetObj = targetModel.getCameraTarget()
         hsOutput['data-target'] = `${targetObj.x.toFixed(5)}m ${targetObj.y.toFixed(5)}m ${targetObj.z.toFixed(5)}m`
-        metadata.annotations['New Hotspot'] = hsOutput
+        metadata.annotations['Hotspot ' + (Object.keys(metadata.annotations).length + 1)] = hsOutput
         let newText = currentText.replace(/(.*?<pre>)[\S\s]*?(<\/pre>.*)/,`$1\n${JSON.stringify(metadata, null, 2)}\n$2`)
         $('#wpTextbox1').val(newText)
     }