#93: Add flac support (#101)

* Added script shell to convert wav files to flac

* #93: Minor change to script to convert wav files to flac

* #93: Added more code to for the music file conversion

* #93: Script to convert wav files to flac files is done

* #93: Clean up

* #93: Starting work to implement flac support

* #93: Minor update to conversion script

* #93: Added dotnet manifest file

Includes the dotnet-ef tool

* #93: Updated README and migration script

* #93: Created skeleton for saving flac files

* #93: Making some changes to how the file extension is determined

* #93: Updated gitignore

* #93: Another gitignore update

* #93: Making some changes to the process of saving a song to the filesystem

* #93: Adding SQL script to drop and create database

* #93: Saving uploaded song to a temporary location for processing

* #93: Initializing some properties in the song model earlier

* #93: Uploading wav songs works. Moving on to flac support

* #93: Added more code to save flac files

* #93: Updated some code that affects filename generation for audio files

* #93: Song Model changes and support for different file types

* #93: Working on build errors, removed DotnetZip dependency, and added new Ionic.Zlip.Netstandard dependency

* #93: Reduce build errors

* #93: Removed ID3 dependency

* #93: Cleanup

Authorization/Handlers/HasScopeHandler.cs

@@ -1,7 +1,3 @@
-using System;
-using System.Linq;
-using System.Threading.Tasks;
-
 using Microsoft.AspNetCore.Authorization;
 
 using Icarus.Authorization;
@@ -18,7 +14,7 @@ public class HasScopeHandler : AuthorizationHandler<HasScopeRequirement>
         }
 
         var scopes = context.User.FindFirst(c =>
-            c.Type == "scope" && c.Issuer == requirement.Issuer).Value.Split(' ');
+            c.Type == "scope" && c.Issuer == requirement.Issuer)!.Value.Split(' ');
 
         if (scopes.Any(s => s == requirement.Scope))
         {