Export node module as esm

- Has better support by consuming tooling to "pass through" assets like
  svgs

package.json

@@ -2,6 +2,7 @@
  "name": "@weaveworks/weave-gitops",
  "version": "0.8.1-rc.4",
  "description": "Weave GitOps core",
+ "module": "index.js",
  "targets": {
  "default": {
  "distDir": "bin/dist",
@@ -11,7 +12,8 @@
  "lib": {
  "includeNodeModules": false,
  "isLibrary": true,
- "outputFormat": "commonjs",
+ "optimize": false,
+ "outputFormat": "esmodule",
  "distDir": "dist",
  "source": "ui/index.ts",
  "sourceMap": false

ui/lib/images.ts

@@ -1,17 +1,17 @@
 /* eslint-disable */
 // @ts-nocheck
 
-import bg from "data-url:../images/General-backgroundok.png";
-import failedSrc from "data-url:../images/failed.svg";
-import fancyCardBackground from "data-url:../images/fancy-card-background.svg";
-import fancyCardBackgroundBlue from "data-url:../images/fancy-card-background-blue.svg";
-import fancyCardBackgroundOrange from "data-url:../images/fancy-card-background-orange.svg";
-import logoSrc from "data-url:../images/logo.svg";
-import signInWheel from "data-url:../images/SignInWheel.svg";
-import successSrc from "data-url:../images/success.svg";
-import suspendedSrc from "data-url:../images/suspended.svg";
-import titleSrc from "data-url:../images/Title.svg";
-import weaveLogo from "data-url:../images/WeaveLogo.svg";
+import bg from "../images/General-backgroundok.png";
+import failedSrc from "../images/failed.svg";
+import fancyCardBackground from "../images/fancy-card-background.svg";
+import fancyCardBackgroundBlue from "../images/fancy-card-background-blue.svg";
+import fancyCardBackgroundOrange from "../images/fancy-card-background-orange.svg";
+import logoSrc from "../images/logo.svg";
+import signInWheel from "../images/SignInWheel.svg";
+import successSrc from "../images/success.svg";
+import suspendedSrc from "../images/suspended.svg";
+import titleSrc from "../images/Title.svg";
+import weaveLogo from "../images/WeaveLogo.svg";
 
 export default {
  bg,