Core package storybook setup (#1003)

* [/][m]: add storybook to core package

* [/][s]: replace nx with nrwl packages for storybook

* [core][xs]: mv tsconfig.storybook.json to .storybook/tsconfig.json

* [/][s]: configure storybook with tailwind

* [core/tailwind.config.js][xs]: add basic Flowershow tailwind config

* [core][xs]: add example story

* [core][s]: darkmode storybook addon

packages/core/.storybook/main.ts

@@ -0,0 +1,21 @@
+import type { StorybookConfig } from '@storybook/react-webpack5';
+
+const config: StorybookConfig = {
+  stories: ['../src/**/*.stories.@(js|jsx|ts|tsx|mdx)'],
+  addons: [
+    '@storybook/addon-essentials',
+    '@storybook/addon-interactions',
+    '@nrwl/react/plugins/storybook',
+    'storybook-tailwind-dark-mode'
+  ],
+  framework: {
+    name: '@storybook/react-webpack5',
+    options: {},
+  },
+};
+
+export default config;
+
+// To customize your webpack configuration you can use the webpackFinal field.
+// Check https://storybook.js.org/docs/react/builders/webpack#extending-storybooks-webpack-config
+// and https://nx.dev/packages/storybook/documents/custom-builder-configs