Refactor out extensions-modules and rewrite mssql extension (#909)

* commting .d.ts changes

* added serverinfo to .d.ts

* maybe its working?

* works

* updated contrib

* remove unnecessary code

* fix compile errors

* init

* conitnue

* on the way to working maybe?

* close

* EVERYTHING WORKS

* moved src out of client folder

* formatting

* reenable logging

* working on build file

* fixed install service gulp command

* fix the command to properly return promises

* clean up code

* add telemetry

* formatting

* added logging/telemetry/statusview

* formatting

* address comments

* resolute vscode-language versions

extensions/mssql/tsconfig.json

@@ -0,0 +1,19 @@
+{
+    "compileOnSave": true,
+    "compilerOptions": {
+        "module": "commonjs",
+        "target": "es6",
+		"outDir": "./out",
+		"lib": [
+			"es6", "es2015.promise"
+		],
+        "sourceMap": true,
+        "emitDecoratorMetadata": true,
+        "experimentalDecorators": true,
+        "moduleResolution": "node",
+        "declaration": true
+    },
+    "exclude": [
+        "node_modules"
+    ]
+}