Add filter list icon.

packages/application/style/icons.css

@@ -107,6 +107,10 @@
   background-image: var(--jp-icon-circle);
 }
 
+.jp-FilterListIcon {
+  background-image: var(--jp-icon-filter-list);
+}
+
 .jp-FolderIcon {
   background-image: var(--jp-icon-folder);
 }

packages/theme-dark-extension/style/icons/md/ic_filter_list_24px.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" fill="#e0e0e0" width="24" height="24" viewBox="0 0 24 24"><path d="M10 18h4v-2h-4v2zM3 6v2h18V6H3zm3 7h12v-2H6v2z"/></svg>

packages/theme-dark-extension/style/urls.css

@@ -56,6 +56,7 @@
   --jp-icon-file-upload: url('icons/md/ic_file_upload_24px.svg');
   --jp-icon-file-selected: url('icons/jupyter/file_selected.svg');
   --jp-icon-file: url('icons/jupyter/file.svg');
+  --jp-icon-filter-list: url('icons/md/ic_filter_list_24px.svg');
   --jp-icon-folder-selected: url('icons/md/ic_folder_24px_selected.svg');
   --jp-icon-folder: url('icons/md/ic_folder_24px.svg');
   --jp-icon-home: url('icons/md/ic_home_24px.svg');

packages/theme-light-extension/style/icons/md/ic_filter_list_24px.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" fill="#616161" width="24" height="24" viewBox="0 0 24 24"><path d="M10 18h4v-2h-4v2zM3 6v2h18V6H3zm3 7h12v-2H6v2z"/></svg>

packages/theme-light-extension/style/urls.css

@@ -55,6 +55,7 @@
   --jp-icon-file-upload: url('icons/md/ic_file_upload_24px.svg');
   --jp-icon-file-selected: url('icons/jupyter/file_selected.svg');
   --jp-icon-file: url('icons/jupyter/file.svg');
+  --jp-icon-filter-list: url('icons/md/ic_filter_list_24px.svg');
   --jp-icon-folder-selected: url('icons/md/ic_folder_24px_selected.svg');
   --jp-icon-folder: url('icons/md/ic_folder_24px.svg');
   --jp-icon-home: url('icons/md/ic_home_24px.svg');