Add Internet Radio support (#2063)

* add internet radio support

* Add dynamic sidebar icon to Radios

* Fix typos

* Make URL suffix consistent

* Fix typo

* address feedback

* Don't need to preload when playing Internet Radios

* Reorder migration, or else it won't be applied

* Make Radio list view responsive

Also added filter by name, removed RadioActions and RadioContextMenu, and added a default radio icon, in case of favicon is not available.

* Simplify StreamField usage

* fix button, hide progress on mobile

* use js styles over index.css

Co-authored-by: Deluan <deluan@navidrome.org>

server/subsonic/responses/responses.go

@@ -47,6 +47,8 @@ type Subsonic struct {
 	Bookmarks  *Bookmarks  `xml:"bookmarks,omitempty"                                     json:"bookmarks,omitempty"`
 	ScanStatus *ScanStatus `xml:"scanStatus,omitempty"                                    json:"scanStatus,omitempty"`
 	Lyrics     *Lyrics     `xml:"lyrics,omitempty"                                        json:"lyrics,omitempty"`
+
+	InternetRadioStations *InternetRadioStations `xml:"internetRadioStations,omitempty"  json:"internetRadioStations,omitempty"`
 }
 
 type JsonWrapper struct {
@@ -359,3 +361,14 @@ type Lyrics struct {
 	Title  string `xml:"title,omitempty,attr"   json:"title,omitempty"`
 	Value  string `xml:",chardata"              json:"value"`
 }
+
+type InternetRadioStations struct {
+	Radios []Radio `xml:"internetRadioStation"               json:"internetRadioStation,omitempty"`
+}
+
+type Radio struct {
+	ID          string `xml:"id"          json:"id"`
+	StreamUrl   string `xml:"streamUrl"   json:"streamUrl"`
+	Name        string `xml:"name"        json:"name"`
+	HomepageUrl string `xml:"homePageUrl" json:"homePageUrl"`
+}