refactor namespaces and imports (#670)

* re-namespace

* optimize usings

* more usings

* more of the same

* more implicit/global usings

* cleanup all usings

* minor fixes

ErsatzTV.Core/Metadata/Nfo/MusicVideoNfo.cs

@@ -1,36 +1,34 @@
-using System.Collections.Generic;
-using System.Xml.Serialization;
+using System.Xml.Serialization;
 
-namespace ErsatzTV.Core.Metadata.Nfo
+namespace ErsatzTV.Core.Metadata.Nfo;
+
+[XmlRoot("musicvideo")]
+public class MusicVideoNfo
 {
-    [XmlRoot("musicvideo")]
-    public class MusicVideoNfo
-    {
-        [XmlElement("artist")]
-        public string Artist { get; set; }
+    [XmlElement("artist")]
+    public string Artist { get; set; }
 
-        [XmlElement("title")]
-        public string Title { get; set; }
+    [XmlElement("title")]
+    public string Title { get; set; }
 
-        [XmlElement("album")]
-        public string Album { get; set; }
+    [XmlElement("album")]
+    public string Album { get; set; }
 
-        [XmlElement("plot")]
-        public string Plot { get; set; }
+    [XmlElement("plot")]
+    public string Plot { get; set; }
 
-        [XmlElement("premiered")]
-        public string Premiered { get; set; }
+    [XmlElement("premiered")]
+    public string Premiered { get; set; }
 
-        [XmlElement("year")]
-        public int Year { get; set; }
+    [XmlElement("year")]
+    public int Year { get; set; }
 
-        [XmlElement("genre")]
-        public List<string> Genres { get; set; }
+    [XmlElement("genre")]
+    public List<string> Genres { get; set; }
 
-        [XmlElement("tag")]
-        public List<string> Tags { get; set; }
+    [XmlElement("tag")]
+    public List<string> Tags { get; set; }
 
-        [XmlElement("studio")]
-        public List<string> Studios { get; set; }
-    }
-}
+    [XmlElement("studio")]
+    public List<string> Studios { get; set; }
+}