Update azure-pipelines.yml for Azure Pipelines

azure-pipelines.yml

@@ -20,6 +20,15 @@ steps:
 
 - task: NuGetToolInstaller@1
 
+- task: UseDotNet@2
+  inputs:
+    packageType: 'sdk'
+    useGlobalJson: true
+
+- task: CmdLine@2
+  inputs:
+    script: 'dotnet workload install wasm-tools'
+
 - task: NuGetCommand@2
   inputs:
     restoreSolution: '$(solution)'