Add WASM support to Azure function

[VenkateshSrini]

What problem would the feature you're requesting solve? Please describe.

Like we have many kinds of work loads that we can run like isolated process, container , please add WASM also one of the workload that can be run in Azure functions

Describe the solution you'd like

1. When deploying the code, provide an attribute that will tell that the code has to be converted to wasm
2. Run the wasm in azure function.
   This is to reduce the time for cold starts

Describe alternatives you've considered

A clear and concise description of any alternative solutions or features you've considered.

1. Support Fermyon Spin in azure functions
2. Like we are building exe and dll using dotnet publish and we have dotnet publish container, we need dotnet publish wasm, Then push wasm to Azure function