chore(scripts): update e2e prod build to work with ionic-app-scripts (#10083)

* chore(e2e): WIP to add files needed for app-scripts

* chore(e2e): WIP one e2e test building but with errors

* chore(e2e): move e2e.prod to working with app-scripts

move shared functions into util, add support for debug flag when
running e2e.prod / demos.prod which gets passed to app-scripts

* chore(build): fix app-scripts build for all e2e and demos

* chore(e2e): update ionic-angular import path

* chore(build): update dev paths to work with prod

* chore(e2e): get watch working with e2e prod

* docs(scripts): update README for running e2e and demos

closes #8411
closes #10023

scripts/e2e/variables.scss

@@ -0,0 +1,79 @@
+// Ionic Variables and Theming. For more info, please see:
+// http://ionicframework.com/docs/v2/theming/
+
+// Font path is used to include ionicons,
+// roboto, and noto sans fonts
+$font-path: "../../../../../fonts";
+
+@import "ionic.globals";
+
+
+// Shared Variables
+// --------------------------------------------------
+// To customize the look and feel of this app, you can override
+// the Sass variables found in Ionic's source scss files.
+// To view all the possible Ionic variables, see:
+// http://ionicframework.com/docs/v2/theming/overriding-ionic-variables/
+
+
+// Named Color Variables
+// --------------------------------------------------
+// Named colors makes it easy to reuse colors on various components.
+// It's highly recommended to change the default colors
+// to match your app's branding. Ionic uses a Sass map of
+// colors so you can add, rename and remove colors as needed.
+// The "primary" color is the only required color in the map.
+
+$colors: (
+  primary:    #387ef5,
+  secondary:  #32db64,
+  danger:     #f53d3d,
+  light:      #f4f4f4,
+  dark:       #222,
+  vibrant:    rebeccapurple,
+  bright:     #ffc125
+);
+
+
+// App iOS Variables
+// --------------------------------------------------
+// iOS only Sass variables can go here
+
+
+
+// App Material Design Variables
+// --------------------------------------------------
+// Material Design only Sass variables can go here
+
+
+// App Windows Variables
+// --------------------------------------------------
+// Windows only Sass variables can go here
+
+
+
+// App Theme
+// --------------------------------------------------
+// Ionic apps can have different themes applied, which can
+// then be future customized. This import comes last
+// so that the above variables are used and Ionic's
+// default are overridden.
+
+@import "ionic.theme.default";
+
+
+// Ionicons
+// --------------------------------------------------
+// The premium icon font for Ionic. For more info, please see:
+// http://ionicframework.com/docs/v2/ionicons/
+
+@import "ionicons";
+
+
+// Fonts
+// --------------------------------------------------
+// Roboto font is used by default for Material Design. Noto sans
+// is used by default for Windows.
+
+@import "roboto";
+@import "noto-sans";