Convert embedded license into SPDX expression for simplicity

and require license acceptance (good practice)

Author: Lamparter

src/WinAppCommunity.Sdk.csproj

@@ -5,7 +5,7 @@
 		<LangVersion>12.0</LangVersion>
 		<WarningsAsErrors>nullable</WarningsAsErrors>
 		<GeneratePackageOnBuild>true</GeneratePackageOnBuild>
-		<PackageRequireLicenseAcceptance>false</PackageRequireLicenseAcceptance>
+		<PackageRequireLicenseAcceptance>True</PackageRequireLicenseAcceptance>
 
 		<PublishRepositoryUrl>true</PublishRepositoryUrl>
 		<IncludeSymbols>true</IncludeSymbols>
@@ -17,7 +17,6 @@
 		<Version>0.0.0</Version>
 		<Product>WinAppCommunity</Product>
 		<Description></Description>
-		<PackageLicenseFile>LICENSE.md</PackageLicenseFile>
 		<PackageIcon>logo.png</PackageIcon>
 		<PackageProjectUrl>https://github.com/UWPCommunity/WinAppCommunity.Sdk</PackageProjectUrl>
 		<PackageReleaseNotes>
@@ -28,6 +27,7 @@ Initial release of WinAppCommunity.Sdk.
 		<DebugType>embedded</DebugType>
 		<NeutralLanguage>en</NeutralLanguage>
 		<Authors>Arlo Godfrey</Authors>
+		<PackageLicenseExpression>MIT</PackageLicenseExpression>
 	</PropertyGroup>
 
 	<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
@@ -46,13 +46,6 @@ Initial release of WinAppCommunity.Sdk.
 		<Deterministic>true</Deterministic>
 	</PropertyGroup>
 
-	<ItemGroup>
-		<None Include="..\LICENSE.md">
-			<Pack>True</Pack>
-			<PackagePath></PackagePath>
-		</None>
-	</ItemGroup>
-
 	<ItemGroup>
 		<PackageReference Include="Microsoft.Bcl.AsyncInterfaces" Version="9.0.0" />
 		<PackageReference Include="Microsoft.SourceLink.GitHub" Version="8.0.0" PrivateAssets="All" />