Reports, and who liked or boosted a post

Another's profile and posts can be reported from the client (/api/v1/reports): a category, words, and for a remote
account a copy to its server, which PrivaPub sends from its own actor, never naming the persona. Who liked or boosted
a post opens from its card's menu (favourited_by, reblogged_by). e2e: a report from a Mastodon account's profile
reaches PrivaPub's moderators forwarded, and a post's likes and boosts list the persona who gave them; the admin
helper the tests share moves to Support.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LsXgEaXee4GCU1hwYgPJXw

MastodonJsonContext.cs

@@ -37,6 +37,7 @@ namespace decePubClient;
 [JsonSerializable(typeof(StatusEditForm))]
 [JsonSerializable(typeof(StatusSource))]
 [JsonSerializable(typeof(List<StatusEdit>))]
+[JsonSerializable(typeof(ReportRequest))]
 [JsonSerializable(typeof(Poll))]
 [JsonSerializable(typeof(PollVoteForm))]
 [JsonSerializable(typeof(MastodonList))]