feat: チャンネルに色を設定できるように

packages/backend/src/core/entities/ChannelEntityService.ts

@@ -74,6 +74,7 @@ export class ChannelEntityService {
 			userId: channel.userId,
 			bannerUrl: banner ? this.driveFileEntityService.getPublicUrl(banner) : null,
 			pinnedNoteIds: channel.pinnedNoteIds,
+			color: channel.color,
 			usersCount: channel.usersCount,
 			notesCount: channel.notesCount,
 

packages/backend/src/core/entities/NoteEntityService.ts

@@ -335,6 +335,7 @@ export class NoteEntityService implements OnModuleInit {
 			channel: channel ? {
 				id: channel.id,
 				name: channel.name,
+				color: channel.color,
 			} : undefined,
 			mentions: note.mentions.length > 0 ? note.mentions : undefined,
 			uri: note.uri ?? undefined,