fix: explain replacement for VListItemAvatar/Icon (#72)

Author: yutak23

src/rules/no-deprecated-components.js

@@ -24,9 +24,9 @@ const replacements = {
   VCalendar: false,
   VData: false,
   VListItemGroup: false,
-  VListItemAvatar: false,
+  VListItemAvatar: { custom: '`v-list-item` with `avatar` props, or `v-avatar` in the list item append or prepend slot' },
   VListItemContent: false,
-  VListItemIcon: false,
+  VListItemIcon: { custom: '`v-list-item` with `icon` props, or `v-icon` in the list item append or prepend slot' },
   VOverflowBtn: false,
   VPicker: false,
   VSimpleCheckbox: 'v-checkbox-btn',