Add pre_runtime_compile and post_runtime_compile
Add pre_runtime_compile and post_runtime_compile

aidothebrit/dotnet-buildpack,cloudfoundry-community/.net-buildpack,cloudfoundry-community/.net-buildpack,aidothebrit/dotnet-buildpack,cloudfoundry-community/.net-buildpack,Hitakashi/.net-buildpack,Hitakashi/.net-buildpack,Hitakashi/.net-buildpack