New option: Pause MFM animations until status hover (#120)

Reviewed-on: https://akkoma.dev/AkkomaGang/pleroma-fe/pulls/120
Co-authored-by: eris <femmediscord@gmail.com>
Co-committed-by: eris <femmediscord@gmail.com>

src/components/status_content/status_content.vue

@@ -1,7 +1,7 @@
 <template>
   <div
     class="StatusContent"
-    :class="{ '-compact': compact }"
+    :class="{ '-compact': compact, 'mfm-hover': renderMfmOnHover }"
   >
     <slot name="header" />
     <StatusBody
@@ -75,6 +75,12 @@
       height: 50px;
     }
   }
+
+  &.mfm-hover:not(:hover) {
+    .mfm {
+      animation: none;
+    }
+  }
 }
 
 .quote-inline,