feat: sensitive channel (#11438)

* feat(backend): add isSensitive to Channel

* feat(backend): support isSensitive in channel endpoints

* feat(frontend/channel-editor): support isSensitive in create/edit channel page

* feat(frontend/channel): show sensitive indicator for sensitive channels

* docs(changelog): add チャンネルをセンシティブ指定できるようになりました

* chore: license header for each file

* chore: add isSensitive of channel to Note object

packages/backend/src/server/api/endpoints/channels/update.ts

@@ -60,6 +60,7 @@ export const paramDef = {
 			},
 		},
 		color: { type: 'string', minLength: 1, maxLength: 16 },
+		isSensitive: { type: 'boolean', nullable: true },
 	},
 	required: ['channelId'],
 } as const;
@@ -114,6 +115,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 				...(ps.color !== undefined ? { color: ps.color } : {}),
 				...(typeof ps.isArchived === 'boolean' ? { isArchived: ps.isArchived } : {}),
 				...(banner ? { bannerId: banner.id } : {}),
+				...(typeof ps.isSensitive === 'boolean' ? { isSensitive: ps.isSensitive } : {}),
 			});
 
 			return await this.channelEntityService.pack(channel.id, me);