Vite + TypeScript (#836)

Resolves #803

This is an initial commit to allow migrating to typescript bit by bit.
It introduces vite.
It removes all the webpack configuration (which I have no clue what all
the profiling are needed for, and couldn't find anything in the readme).
It also changes a single file from javascript to typescript:
`urlopen.js` -> `urlopen.ts`
Which was done manually, later on I'll see if I can automate most of the
migration.
For now, everything seems to work as expected.
I also upgrades storybook to use vite and renames the stories to jsx (I
honestly don't know why this complexity is needed here, but I'll keep it
for now).

cc: @damianstasik

stories/IconLayer.stories.jsx

@@ -0,0 +1,53 @@
+import React from 'react';
+import IconLayer from '../src/components/IconLayer';
+import {Wrapper} from './ui';
+
+
+export default {
+  title: 'IconLayer',
+  component: IconLayer,
+};
+
+export const IconList = () => {
+  const types = [
+    'fill-extrusion',
+    'raster',
+    'hillshade',
+    'heatmap',
+    'fill',
+    'background',
+    'line',
+    'symbol',
+    'circle',
+    'INVALID',
+  ]
+
+  return <Wrapper>
+    <table style={{textAlign: "left"}}>
+      <thead style={{borderBottom: "solid 1px white"}}>
+        <tr>
+          <td>ID</td>
+          <td>Preview</td>
+        </tr>
+      </thead>
+      <tbody>
+        {types.map(type => (
+          <tr>
+            <td style={{paddingRight: "1em"}}>
+              <code>{type}</code>
+            </td>
+            <td>
+              <IconLayer type={type} />
+            </td>
+          </tr>
+        ))}
+      </tbody>
+    </table>
+  </Wrapper>
+};
+
+
+
+
+
+