Output undefined channel for client (#675)

* added null output channel to the client

* potential fix the yarn problems

dataprotocol-client/package.json

@@ -3,6 +3,7 @@
   "version": "1.0.0",
   "description": "SQL Operations Studio studio implementation of vscode-language-client",
   "main": "lib/main.js",
+	"typings": "./lib/main",
   "scripts": {
     "prepare": "node ./node_modules/vscode/bin/install && tsc -p ./src",
     "compile": "tsc -p ./src",

dataprotocol-client/src/main.ts

@@ -23,6 +23,7 @@ function ensure<T, K extends keyof T>(target: T, key: K): T[K] {
 
 export interface LanguageClientOptions extends VSLanguageClientOptions {
 	providerId: string;
+	serverConnectionMetadata: any;
 }
 
 /**