major refactor

- move common components to own folder
- add tsconfig for common reference and build
- update configuration files for global JSX support
- modify checkbox creation with specific required option

common/package.json

@@ -0,0 +1,9 @@
+{
+  "name": "common",
+  "version": "0.0.1",
+  "description": "Common components to build elixForms custom pages",
+  "license": "ISC",
+  "author": "",
+  "type": "commonjs",
+  "main": "index.js"
+}