Implement originalReleaseDate in OpenSubsonic responses. (#2733)

See https://github.com/opensubsonic/open-subsonic-api/pull/80

server/subsonic/responses/.snapshots/Responses AlbumWithSongsID3 with data should match .JSON

@@ -31,6 +31,11 @@
         "title": "disc 2"
       }
     ],
+    "originalReleaseDate": {
+      "year": 1994,
+      "month": 2,
+      "day": 4
+    },
     "song": [
       {
         "id": "1",

server/subsonic/responses/.snapshots/Responses AlbumWithSongsID3 with data should match .XML

@@ -4,6 +4,7 @@
     <genres name="progressive"></genres>
     <discTitles disc="1" title="disc 1"></discTitles>
     <discTitles disc="2" title="disc 2"></discTitles>
+    <originalReleaseDate year="1994" month="2" day="4"></originalReleaseDate>
     <song id="1" isDir="true" title="title" album="album" artist="artist" track="1" year="1985" genre="Rock" coverArt="1" size="8421341" contentType="audio/flac" suffix="flac" starred="2016-03-02T20:30:00Z" transcodedContentType="audio/mpeg" transcodedSuffix="mp3" duration="146" bitRate="320" isVideo="false" bpm="127" comment="a comment" sortName="sorted song" mediaType="song" musicBrainzId="4321">
       <genres name="rock"></genres>
       <genres name="progressive"></genres>

server/subsonic/responses/.snapshots/Responses AlbumWithSongsID3 without data should match .JSON

@@ -12,6 +12,7 @@
     "musicBrainzId": "",
     "isCompilation": false,
     "sortName": "",
-    "discTitles": []
+    "discTitles": [],
+    "originalReleaseDate": {}
   }
 }

server/subsonic/responses/.snapshots/Responses AlbumWithSongsID3 without data should match .XML

@@ -1,3 +1,5 @@
 <subsonic-response xmlns="http://subsonic.org/restapi" status="ok" version="1.8.0" type="navidrome" serverVersion="v0.0.0" openSubsonic="true">
-  <album id="" name="" userRating="0" musicBrainzId="" isCompilation="false" sortName=""></album>
+  <album id="" name="" userRating="0" musicBrainzId="" isCompilation="false" sortName="">
+    <originalReleaseDate></originalReleaseDate>
+  </album>
 </subsonic-response>

server/subsonic/responses/responses.go

@@ -218,13 +218,14 @@ type AlbumID3 struct {
 	Genre     string     `xml:"genre,attr,omitempty"               json:"genre,omitempty"`
 
 	// OpenSubsonic extensions
-	Played        *time.Time `xml:"played,attr,omitempty" json:"played,omitempty"`
-	UserRating    int32      `xml:"userRating,attr"       json:"userRating"`
-	Genres        ItemGenres `xml:"genres"                json:"genres"`
-	MusicBrainzId string     `xml:"musicBrainzId,attr"    json:"musicBrainzId"`
-	IsCompilation bool       `xml:"isCompilation,attr"    json:"isCompilation"`
-	SortName      string     `xml:"sortName,attr"         json:"sortName"`
-	DiscTitles    DiscTitles `xml:"discTitles"            json:"discTitles"`
+	Played              *time.Time `xml:"played,attr,omitempty" json:"played,omitempty"`
+	UserRating          int32      `xml:"userRating,attr"       json:"userRating"`
+	Genres              ItemGenres `xml:"genres"                json:"genres"`
+	MusicBrainzId       string     `xml:"musicBrainzId,attr"    json:"musicBrainzId"`
+	IsCompilation       bool       `xml:"isCompilation,attr"    json:"isCompilation"`
+	SortName            string     `xml:"sortName,attr"         json:"sortName"`
+	DiscTitles          DiscTitles `xml:"discTitles"            json:"discTitles"`
+	OriginalReleaseDate ItemDate   `xml:"originalReleaseDate"   json:"originalReleaseDate"`
 }
 
 type ArtistWithAlbumsID3 struct {
@@ -492,3 +493,9 @@ func marshalJSONArray[T any](v []T) ([]byte, error) {
 	a := v
 	return json.Marshal(a)
 }
+
+type ItemDate struct {
+	Year  int `xml:"year,attr,omitempty" json:"year,omitempty"`
+	Month int `xml:"month,attr,omitempty" json:"month,omitempty"`
+	Day   int `xml:"day,attr,omitempty" json:"day,omitempty"`
+}

server/subsonic/responses/responses_test.go

@@ -176,7 +176,8 @@ var _ = Describe("Responses", func() {
 					Id: "1", Name: "album", Artist: "artist", Genre: "rock",
 					Genres:        []ItemGenre{{Name: "rock"}, {Name: "progressive"}},
 					MusicBrainzId: "1234", IsCompilation: true, SortName: "sorted album",
-					DiscTitles: DiscTitles{{Disc: 1, Title: "disc 1"}, {Disc: 2, Title: "disc 2"}},
+					DiscTitles:          DiscTitles{{Disc: 1, Title: "disc 1"}, {Disc: 2, Title: "disc 2"}},
+					OriginalReleaseDate: ItemDate{Year: 1994, Month: 2, Day: 4},
 				}
 				t := time.Date(2016, 03, 2, 20, 30, 0, 0, time.UTC)
 				songs := []Child{{