feat(platform-browser-dynamic): re-add a deprecated platform-browser-dynamic

modules/@angular/platform-browser-dynamic/rollup.config.js

@@ -0,0 +1,19 @@
+export default {
+  entry: '../../../dist/packages-dist/platform-browser-dynamic/esm/index.js',
+  dest: '../../../dist/packages-dist/platform-browser-dynamic/esm/platform-browser-dynamic.umd.js',
+  format: 'umd',
+  moduleName: 'ng.platformBrowserDynamic',
+  globals: {
+    '@angular/core': 'ng.core',
+    '@angular/common': 'ng.common',
+    '@angular/compiler': 'ng.compiler',
+    '@angular/platform-browser': 'ng.platformBrowser',
+    'rxjs/Subject': 'Rx',
+    'rxjs/observable/PromiseObservable': 'Rx', // this is wrong, but this stuff has changed in rxjs b.6 so we need to fix it when we update.
+    'rxjs/operator/toPromise': 'Rx.Observable.prototype',
+    'rxjs/Observable': 'Rx'
+  },
+  plugins: [
+//    nodeResolve({ jsnext: true, main: true }),
+  ]
+}