feat(frontend): 絵文字ピッカーの実装 (#12617)

* 絵文字デッキの作成

* 細かい不備を修正

* fix lint

* fix

* fix CHANGELOG.md

* fix setTimeout -> nextTick

* fix https://github.com/misskey-dev/misskey/pull/12617#issuecomment-1848952862

* fix bug

* fix CHANGELOG.md

* fix CHANGELOG.md

* wip

* Update CHANGELOG.md

* Update CHANGELOG.md

* wip

---------

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

packages/frontend/src/components/form/section.vue

@@ -6,6 +6,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 <template>
 <div :class="[$style.root, { [$style.rootFirst]: first }]">
 	<div :class="[$style.label, { [$style.labelFirst]: first }]"><slot name="label"></slot></div>
+	<div :class="[$style.description]"><slot name="description"></slot></div>
 	<div :class="$style.main">
 		<slot></slot>
 	</div>
@@ -31,7 +32,7 @@ defineProps<{
 .label {
 	font-weight: bold;
 	padding: 1.5em 0 0 0;
-	margin: 0 0 16px 0;
+	margin: 0 0 8px 0;
 
 	&:empty {
 		display: none;
@@ -45,4 +46,10 @@ defineProps<{
 .main {
 	margin: 1.5em 0 0 0;
 }
+
+.description {
+	font-size: 0.85em;
+	color: var(--fgTransparentWeak);
+	margin: 0 0 8px 0;
+}
 </style>