IWorkspaceContextService should only exist on renderer side and have less functionality

[bpasero]

We should split this guy up into pieces and only leave the workspace specific functionality.

[bpasero]

@joaomoreno cc

[bpasero]

Lots of work has happened and there are only a few places left where the old LegacyContextService is being used. This will be continued in other issues, closing.