Merge pull request #121 from lkosson/multitarget

Multitarget both .NET 8 and .NET 9 (#120)

Author: thebentern

Meshtastic/Meshtastic.csproj

@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework>net9.0</TargetFramework>
+    <TargetFrameworks>net8.0;net9.0</TargetFrameworks>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
     <RootNamespace>Meshtastic</RootNamespace>