MkCodeのパースエンジンをShikiに変更 (#12102)

* (swap) prism -> shiki

* fix styles

* (bump) aiscript-vscode to v0.0.5

* refactor

* replace prism-editor (beta)

* Update scratchpad.vue

* (enhance) MkCodeEditor自動インデント改行

* (fix) lint

* (add) scratchpad: MkStickyContainer

* Update CHANGELOG.md

* clean up

---------

Co-authored-by: syuilo <Syuilotan@yahoo.co.jp>

packages/frontend/src/pages/settings/plugin.vue

@@ -50,7 +50,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 							<MkButton inline @click="copy(plugin)"><i class="ti ti-copy"></i> {{ i18n.ts.copy }}</MkButton>
 						</div>
 
-						<MkCode :code="plugin.src ?? ''"/>
+						<MkCode :code="plugin.src ?? ''" lang="is"/>
 					</div>
 				</MkFolder>
 			</div>