* moving naming styles types into the workspace layer.
Teaching abstract options serialization service about naming styles.

* Implementing naming styles support for editorconfig

* responding to david's PR feedback

* responding to Jason's feedback

* responding to Jason's feedback part 2

* addressing the latest set of comments from David

* addressing Jason's comments

* addressing Kevin's comments

1. filter out projects that is not supported in remote host when calculating checksum
2. wrong validation on contract

unit test added

latest version of JsonRpc supports custom JsonConverter which I added for these 4 types. Checksum, SolutionId, ProjectId, DocumentId

we can add more to AggregateJsonConverter for common roslyn types.

unit test added

Add Razor Language Service shim for accessing the remote client

Add Razor Remote Workspace shim for getting access to the solution in
the ServiceHub process. This relies on the same set of Roslyn services
being called by the client to initialize state in the remote process.

Add overloads to the 'remote' solution service to avoid a need for IVT in
in the Razor Remote Workspace shim. Checksum is internal to Workspace.

Don't search for files looking for a predefined type when the type we're looking at is not predefined itself.

Wires up local functions through the semantic model and the SymbolId
service so the description is available to the editor.

Fixes #14163

Don't search for files looking for a predefined type when the type we're looking at is not predefined itself.

Add a version header to Object-Streams.  This way we can tell, up front if the persistence version has changed, and if we can read the data properly or not.