Implement Serverless Functions into OpenShift Toolkit extension

[mohitsuman]

Implement the OpenShift Serverless view into OpenShift Toolkit extension.

• Add a new view in the navigation with name as Serverless Functions
• Rewrite the UI in material UI workflow in sync with vscode theme. Remove the old UI elements completely
• Update to latest func cli https://github.com/knative/func

[rgrunber]

@datho7561 do you see anything in https://github.com/redhat-developer/vscode-knative/ not playing well with esbuild ? Otherwise , size shouldn't be an issue.

[datho7561]

Yes, shelljs doesn't play well with esbuild. We can probably use alternatives to shelljs, but that will require a bit more effort.

[datho7561]

Does knative have any webviews?

[msivasubramaniaan]

Yes it has.

We are going to add only function CLI on OpenShift extension. I hope the size shouldn't be a problem.

[mohitsuman]

Does knative have any webviews?

It has webviews, but onty few and the idea is to add more webviews in the future. For dependencies that do not work well, we can update them. Given the repo has not been touched in a while, I would like that when we implement it, we add dependencies as per our toolkit workflow.