Merge pull request #78 from neogeek/feature/update-net-5

[feat] Changed target framework from .net standard to .net 5

Author: neogeek

RhythmGameUtilities/RhythmGameUtilities.csproj

@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
     <PropertyGroup>
-        <TargetFrameworks>netstandard2.1</TargetFrameworks>
+        <TargetFrameworks>net5.0</TargetFrameworks>
         <LangVersion>9.0</LangVersion>
         <AssemblyVersion>1.0.0</AssemblyVersion>
     </PropertyGroup>