Added the Self Serve Data Model (#367)

* added recursion and inition decorators

* working version

* added todo comment and removed console.log

* Added Recursive add

* removed type requirement

* proper resolution of promises

* added custom element and base class

* Made selfServe standalone page

* Added custom renderer as async type

* Added overall defaults

* added inital open from data explorer

* removed landingpage

* added feature for self serve type

* renamed sqlx->example and added invalid type

* Added comments for Example

* removed unnecessary changes

* Resolved PR comments

Added tests
Moved onSubmt and initialize inside base class
Moved testExplorer to separate folder
made fields of SelfServe Class non static

* fixed lint errors

* fixed compilation errors

* Removed reactbinding changes

* renamed dropdown -> choice

* Added SelfServeComponent

* Addressed PR comments

* merged master

* added selfservetype.none for emulator and hosted experience

* fixed formatting errors

* Removed "any" type

* undid package.json changes

tsconfig.json

@@ -12,6 +12,8 @@
     "downlevelIteration": true,
     "module": "esnext",
     "target": "es5",
+    "experimentalDecorators": true,
+    "emitDecoratorMetadata": true,
     "lib": ["es5", "es6", "dom", "webworker.importscripts"],
     "jsx": "react",
     "moduleResolution": "node",
@@ -19,6 +21,6 @@
     "noEmit": true,
     "types": ["jest"]
   },
-  "include": ["./src/**/*", "./test/notebooks/testExplorer/**/*"],
+  "include": ["./src/**/*", "./test/testExplorer/TestExplorer.ts"],
   "exclude": ["./src/**/__mocks__/**/*"]
 }