onnxruntime

a3febf97 - Cherry-pick azure ep for nuget (#15941)

Cherry-pick azure ep for nuget (#15941) Cherry pick a commit that can: 1. support for openAi audio endpoints; 2. package as nuget This is for 1.15 AzureEP RC release. --------- Co-authored-by: Randy Shuai <rashuai@microsoft.com>