feat: rename bundle to instant.js and move build to umd dir

packages/instant/webpack.config.js

@@ -2,11 +2,14 @@ const path = require('path');
 const ip = require('ip');
 // The common js bundle (not this one) is built using tsc.
 // The umd bundle (this one) has a different entrypoint.
+
 const config = {
-    entry: './src/index.umd.ts',
+    entry: {
+        instant: './src/index.umd.ts',
+    },
     output: {
-        filename: '[name].bundle.js',
-        path: path.resolve(__dirname, 'public'),
+        filename: '[name].js',
+        path: path.resolve(__dirname, 'umd'),
         library: 'zeroExInstant',
         libraryTarget: 'umd',
     },