fix(upload): add mkv MIME type mapping to support MKV video uploads

Author: brianmay

config/config.exs

@@ -56,7 +56,8 @@ config :mime, :types, %{
   "image/cr2" => ["cr2"],
   "image/cr3" => ["cr3"],
   "image/x-adobe-dng" => ["dng"],
-  "image/x-portable-pixmap" => ["ppm"]
+  "image/x-portable-pixmap" => ["ppm"],
+  "video/x-matroska" => ["mkv"]
 }
 
 config :libcluster,

lib/penguin_memories_web/live/upload_live.html.heex

@@ -41,7 +41,7 @@
       <label class="form-label d-block">
         Select a folder or individual files
         <span class="text-muted small">
-          (JPG, CR2, CR3, DNG, MP4, MOV accepted; max 200 MB each)
+          (JPG, CR2, CR3, DNG, MP4, MOV, MKV accepted; max 200 MB each)
         </span>
       </label>
       <div phx-hook="DirectoryUpload" id="directory-upload-hook">