Add a shared tsconfig file (#609)

shared/tsconfig.json

@@ -0,0 +1,15 @@
+{
+  "compilerOptions": {
+    "pretty": true,
+    "moduleResolution": "node",
+    "noImplicitAny": true,
+    "target": "ES6",
+    "module": "commonjs",
+    "lib": ["es5", "es6", "es7", "dom"],
+    "sourceMap": true,
+    "allowSyntheticDefaultImports": true,
+    "experimentalDecorators": true,
+    "emitDecoratorMetadata": true,
+    "outDir": "dist"
+  }
+}