fix: Use HA style and coloring for all icons (#1790)

src/scss/thumbnail.scss

@@ -31,7 +31,7 @@
   transform: scale(1.04);
 }
 
-ha-icon {
+frigate-card-icon {
   position: absolute;
   border-radius: 50%;
   opacity: 0.5;
@@ -43,24 +43,24 @@ ha-icon {
     opacity 0.2s ease-in-out,
     color 0.2s ease-in-out;
 }
-ha-icon:hover {
+frigate-card-icon:hover {
   opacity: 1;
 }
 
-ha-icon.star {
+frigate-card-icon.star {
   top: 3px;
   left: 3px;
 }
-ha-icon.star.starred {
+frigate-card-icon.star.starred {
   color: gold;
 }
 
-ha-icon.timeline {
+frigate-card-icon.timeline {
   top: 3px;
   right: 3px;
 }
 
-ha-icon.download {
+frigate-card-icon.download {
   right: 3px;
   bottom: 3px;
 }