[FEATURE] Add D3 Language Syntax

[itsxallwater]

Is your feature request related to a problem? Please describe. Currently, the client\Syntaxes\MvLanguage.json file contains MVON# Basic language definition and the client\Syntaxes\MVON.tmLanguage.json file contains the MVON# Basic syntax highlighting definition. We are looking to include D3 syntax out of the box to have available as an option within the extension.

Describe the solution you'd like An acceptable pull request for this issue would include a D3 version of the MvLanguage.json and MVON.tmLanguage.json files that can be included in the base package. This pull request need not concern itself with any of the plumbing for the extension to be able to dynamically load that syntax into place, we're simply looking for the syntax definition here.