[Feature Request] Add search to API reference

[lorensr]

Is your feature request related to a problem? Please describe.

Filtering doesn't have methods. Here I'm looking for Workflow.DelayAsync:

Describe the solution you'd like

Filter working for more things, or a search box elsewhere on page.

Additional context

Workaround is googling for site:https://dotnet.temporal.io delayasync but it doesn't take me to the right anchor, just the top of the page https://dotnet.temporal.io/api/Temporalio.Workflows.Workflow.html

[cretz]

We use https://dotnet.github.io/docfx/, so it'd be dependent upon what they support.