add: speakAsCat extension

packages/frontend/.storybook/fakes.ts

@@ -99,6 +99,7 @@ export function userDetailed(id = 'someuserid', username = 'miskist', host = 'mi
 		isBlocking: false,
 		isBot: false,
 		isCat: false,
+		speakAsCat: false,
 		isFollowed: false,
 		isFollowing: false,
 		isLocked: false,

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

@@ -93,6 +93,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 		<div class="_gaps_m">
 			<MkSwitch v-model="profile.isCat">{{ i18n.ts.flagAsCat }}<template #caption>{{ i18n.ts.flagAsCatDescription }}</template></MkSwitch>
+			<MkSwitch v-model="profile.speakAsCat">{{ i18n.ts.flagSpeakAsCat }}<template #caption>{{ i18n.ts.flagSpeakAsCatDescription }}</template></MkSwitch>
 			<MkSwitch v-model="profile.isBot">{{ i18n.ts.flagAsBot }}<template #caption>{{ i18n.ts.flagAsBotDescription }}</template></MkSwitch>
 		</div>
 	</MkFolder>
@@ -141,6 +142,7 @@ const profile = reactive({
 	lang: $i.lang,
 	isBot: $i.isBot,
 	isCat: $i.isCat,
+	speakAsCat: $i.speakAsCat,
 });
 
 watch(() => profile, () => {
@@ -190,6 +192,7 @@ function save() {
 		lang: profile.lang || null,
 		isBot: !!profile.isBot,
 		isCat: !!profile.isCat,
+		speakAsCat: !!profile.speakAsCat,
 	});
 	claimAchievement('profileFilled');
 	if (profile.name === 'syuilo' || profile.name === 'しゅいろ') {