feat(daemon): publish room member statistics over RPC and the CLI

The statistics parsed from the JoinRoom reply were reachable only from the
library. They answer the question `room users` already exists to ask -- who
is in here, and are they worth downloading from -- so they belong on its
output rather than behind a second call.

- proto: room.member_stats, with a RoomUserStatsDto carrying status, share
  counts, free slots and country
- SessionApi::room_member_stats, so local and remote sessions stay
  interchangeable; the status word is decoded through one shared helper
  rather than a third copy of the match
- `room users` now emits status, average_speed, shared_files,
  shared_folders, slots_free and country, each null when the server said
  nothing, documented in SKILL.md
- docs/openrpc.json regenerated from the wire types

soulseek-rs/src/remote/mod.rs

@@ -12,14 +12,14 @@ use crate::daemon::proto::{
     Ack, AuthParams, AuthResult, CODE_APPLICATION, ChatMessageDto,
     DaemonStatus, DirectoriesParams, DirectoryParams, DownloadDto,
     DownloadStartParams, DownloadStarted, Downloads, Event, IntervalSeconds,
-    Members, MessageParams, Messages, Method, PROTOCOL_VERSION, QueryParams,
-    Request, Response, RoomRef, RpcError, SayParams, SearchResults, Searches,
-    Seconds, SharesStatus, SlotsParams, TransferRef, Uploads, UserRef,
-    UserResult,
+    MemberStats, Members, MessageParams, Messages, Method, PROTOCOL_VERSION,
+    QueryParams, Request, Response, RoomRef, RpcError, SayParams,
+    SearchResults, Searches, Seconds, SharesStatus, SlotsParams, TransferRef,
+    Uploads, UserRef, UserResult,
 };
 use mirror::Mirror;
 use serde::de::DeserializeOwned;
-use soulseek_rs::types::{Download, DownloadMetadata};
+use soulseek_rs::types::{Download, DownloadMetadata, RoomUserStats};
 use soulseek_rs::{
     DownloadStatus, Result, RoomEvent, SearchResult, SessionLoss,
     SharedDirectory, SoulseekRs, UploadInfo, UserInfo, UserMessage,
@@ -710,6 +710,17 @@ impl SessionApi for RemoteSession {
         .unwrap_or_default()
     }
 
+    fn room_member_stats(&self, room: &str) -> Vec<RoomUserStats> {
+        self.request::<_, MemberStats>(
+            Method::RoomMemberStats,
+            RoomRef {
+                room: room.to_string(),
+            },
+        )
+        .map(|stats| stats.members.into_iter().map(Into::into).collect())
+        .unwrap_or_default()
+    }
+
     fn take_room_events(&self) -> Vec<RoomEvent> {
         self.mirror.take_rooms()
     }