enhance: Proxy custom emojis to reduce image size and accelerate the frontend (#9431)

* fix(server): /emoji to accept `@.` host expression

* fix(client): use MkEmoji for custom emoji in MkEmojiPicker

* change convertToWebp

* nanka iroiro

* remove

* fix

* nearLosslessは労多くして益少なしなのでやめる

* do not cleanup tmp for development

* update sharp.js to 0.31.3

* mixed: true

* fix MkAutocomplete of 912791b3ab

* clean up

* https://github.com/misskey-dev/misskey/pull/9431#discussion_r1059215943

packages/frontend/src/pages/user/index.photos.vue

@@ -21,7 +21,7 @@
 <script lang="ts" setup>
 import { onMounted } from 'vue';
 import * as misskey from 'misskey-js';
-import { getStaticImageUrl } from '@/scripts/get-static-image-url';
+import { getStaticImageUrl } from '@/scripts/media-proxy';
 import { notePage } from '@/filters/note';
 import * as os from '@/os';
 import MkContainer from '@/components/MkContainer.vue';