Stop video when frame selected

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

src/pages/detect.vue

@@ -546,6 +546,7 @@
       getImage (searchImage) {
         let loadImage = new Promise(resolve => {
           if (this.videoAvailable) {
+            this.cameraStream.getTracks().forEach( t => t.stop())
             this.videoAvailable = false
             resolve(searchImage)
           } else if (this.isCordova && this.imageLoadMode == "camera") {