feat(main): Add base theme: This is the falcon theme out of the box.

This is falcon v3.1.2

falcon/_dev/webpack/webpack.production.js

@@ -0,0 +1,44 @@
+const { ESBuildMinifyPlugin } = require('esbuild-loader');
+const CssMinimizerPlugin = require('css-minimizer-webpack-plugin');
+const PurgeCSSPlugin = require('purgecss-webpack-plugin');
+const safeList = require('./purge-safelist');
+const glob = require('glob-all');
+const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin;
+const { cleanDistFolders } = require('./webpack.parts');
+const { merge } = require("webpack-merge");
+
+const plugins = (purge, analyze) => ([
+  analyze ? new BundleAnalyzerPlugin() : false,
+  purge ? new PurgeCSSPlugin({
+    paths: glob.sync([
+      'js/*.js',
+      'js/**/*.js',
+      '../templates/**/*.tpl',
+      '../modules/**/*.tpl',
+      '../modules/**/*.js'
+    ]),
+    safelist: safeList.list,
+    safelistPatterns: safeList.patterns
+  })
+  : false
+].filter(el => el && el));
+
+exports.productionConfig = ({ purge, analyze }) => (
+  merge(
+    {
+      devtool: 'hidden-source-map',
+      optimization: {
+        minimize: true,
+        minimizer: [
+          new ESBuildMinifyPlugin({
+            target: 'es2015',
+            format: 'iife'
+          }),
+          new CssMinimizerPlugin()
+        ],
+      },
+      plugins: plugins(purge, analyze)
+    },
+    cleanDistFolders()
+  )
+);