Make browser expression functions isomorphic

[streamich]

• Adapt below browser-side expression functions to also work on the server or create an alternative implementation that works on the server; register them in server-side expressions plugin.
  • esaggs (in data plugin Search service)
  • kibana_context (in expressions plugin) Isomorphic kibana_context #57552
  • location?
  • Visualization functions

Parent issue: #46909

[elasticmachine]

Pinging @elastic/kibana-app-arch (Team:AppArch)

[streamich]

I'll make kibana_context function available on the server.

@lukasolson @lizozom somebody working on search needs to make esaggs available on the server.

@ppisljar @Dosant somebody working on visualizations needs to make visualization function available on the server. Or we don't need it on the server?

[ppisljar]

closing this as the majority of work has been completed and we have separate issues to track remaining work