Net8 (#89)

* .NET 8 migration

* Fixed bugs with song management

* More cleanup and making some constants

* Updated yml

* Clean up

Removing comments, some cleanup, and moving the startup code into Program.cs

* Removing comments

* Fixed song deletion issue

* Added functionality to delete song directories

* Updated README

Constants/FileExtensions.cs

@@ -0,0 +1,13 @@
+namespace Icarus.Constants;
+
+public class FileExtensions
+{
+    // Contains file extension with period at the beginning
+    public static string MP3_EXTENSION = ".mp3";
+
+    // Contains file extension with period at the beginning
+    public static string WAV_EXTENSION = ".wav";
+
+    // Contains file extension with period at the beginning
+    public static string JPG_EXTENSION = ".jpg";
+}