Add editorconfig and analyzers, format backend code

backend/Core/Musify.Application/Users/Responses/UserSummaryResponse.cs

@@ -1,13 +1,12 @@
 using System.Text.Json.Serialization;
 using Musify.Application.Serialization;
 
-namespace Musify.Application.Users.Responses
-{
-    public record UserSummaryResponse(
-        [property: JsonConverter(typeof(LongAsStringConverter))] long Id,
-        string Name,
-        string? FirstName,
-        string? SecondName,
-        string? ProfilePictureUrl,
-        bool IsFollowedByViewer);
-}
+namespace Musify.Application.Users.Responses;
+
+public record UserSummaryResponse(
+    [property: JsonConverter(typeof(LongAsStringConverter))] long Id,
+    string Name,
+    string? FirstName,
+    string? SecondName,
+    string? ProfilePictureUrl,
+    bool IsFollowedByViewer);