commands: add derives for a few response types

src/commands/audio_output_devices/outputs.rs

@@ -1,12 +1,14 @@
 use std::collections::HashMap;
 
+use serde::{Deserialize, Serialize};
+
 use crate::commands::{
     Command, Request, RequestParserResult, ResponseAttributes, ResponseParserError,
 };
 
 pub struct Outputs;
 
-#[derive(Debug)]
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
 pub struct Output {
     pub id: u64,
     pub name: String,

src/commands/client_to_client/channels.rs

@@ -1,3 +1,5 @@
+use serde::{Deserialize, Serialize};
+
 use crate::commands::{
     Command, GenericResponseValue, Request, RequestParserResult, ResponseAttributes,
     ResponseParserError,
@@ -5,7 +7,7 @@ use crate::commands::{
 
 pub struct Channels;
 
-#[derive(Debug, Clone, PartialEq, serde::Serialize, serde::Deserialize)]
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
 pub struct ChannelsResponse {
     pub channels: Vec<String>,
 }

src/commands/client_to_client/readmessages.rs

@@ -1,3 +1,5 @@
+use serde::{Deserialize, Serialize};
+
 use crate::commands::{
     Command, GenericResponseValue, Request, RequestParserResult, ResponseAttributes,
     ResponseParserError,
@@ -5,7 +7,7 @@ use crate::commands::{
 
 pub struct ReadMessages;
 
-#[derive(Debug, Clone, PartialEq, serde::Serialize, serde::Deserialize)]
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
 pub struct ReadMessagesResponse {
     pub messages: Vec<(String, String)>,
 }

src/commands/playback_options/replay_gain_status.rs

@@ -1,5 +1,7 @@
 use std::{collections::HashMap, str::FromStr};
 
+use serde::{Deserialize, Serialize};
+
 use crate::{
     commands::{
         get_property, Command, Request, RequestParserResult, ResponseAttributes,
@@ -10,6 +12,7 @@ use crate::{
 
 pub struct ReplayGainStatus;
 
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
 pub struct ReplayGainStatusResponse {
     pub replay_gain_mode: ReplayGainModeMode,
 }

src/commands/querying_mpd_status/currentsong.rs

@@ -1,9 +1,12 @@
+use serde::{Deserialize, Serialize};
+
 use crate::commands::{
     Command, Request, RequestParserResult, ResponseAttributes, ResponseParserError,
 };
 
 pub struct CurrentSong;
 
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
 pub struct CurrentSongResponse {}
 
 impl Command for CurrentSong {