feat: メディアタイムラインを輸入 (#103)

* メディアタイムラインの実装

* refactor(stream): ストリーミングにwithFilesオプションを実装

---------

Co-authored-by: tar_bin <tar.bin.master@gmail.com>

packages/backend/src/server/api/stream/channels/local-timeline.ts

@@ -13,6 +13,7 @@ class LocalTimelineChannel extends Channel {
 	public static shouldShare = true;
 	public static requireCredential = false;
 	private withReplies: boolean;
+	private withFiles: boolean;
 
 	constructor(
 		private metaService: MetaService,
@@ -32,6 +33,7 @@ class LocalTimelineChannel extends Channel {
 		if (!policies.ltlAvailable) return;
 
 		this.withReplies = params.withReplies as boolean;
+		this.withFiles = params.withFiles as boolean;
 
 		// Subscribe events
 		this.subscriber.on('notesStream', this.onNote);
@@ -43,6 +45,9 @@ class LocalTimelineChannel extends Channel {
 		if (note.visibility !== 'public') return;
 		if (note.channelId != null && !this.followingChannels.has(note.channelId)) return;
 
+		// ファイルを含まない投稿は除外
+		if (this.withFiles && (note.files === undefined || note.files.length === 0)) return;
+
 		// リプライなら再pack
 		if (note.replyId != null) {
 			note.reply = await this.noteEntityService.pack(note.replyId, this.user, {