[public-api] Bind unimplemented WorkspacesServiceHandler using Connect

[easyCZ]

Description

Adds an unimplemented handler for WorkspaceService using Connect

Related Issue(s)

• Depends on [public-api] Generate Go and TS Connect protos with buf #13550
• Part of Epic: Dashboard communicates with Public API #13574

How to test

Unit tests

➜ curl \
    --header "Content-Type: application/json" \
    --data '{"workspaceId": "123"}' \
    https://api.mp-public-9156e81389.preview.gitpod-dev.com/gitpod.v1.WorkspacesService/GetWorkspace

{"code":"unimplemented","message":"gitpod.v1.WorkspacesService.GetWorkspace is not implemented"}

Release Notes

NONE

Documentation

Werft options:

• /werft with-local-preview
  If enabled this will build install/preview
• /werft with-preview
• /werft with-integration-tests=all
  Valid options are all, workspace, webapp, ide

[werft-gitpod-dev-com]

started the job as gitpod-build-mp-public-api-bind-unimplemented-ws-handler.1 because the annotations in the pull request description changed
(with .werft/ from main)

[andrew-farries]

We already have parts of the WorkspaceService implemented right? So why does the handler here use an unimplemented handler for all these RPCs?

[easyCZ]

Just to make it more incremental, wanted to demonstrate we can reach the service without actually changing the implementation at this stage :)