docs: added documentation pages for experimental features (#5671)

* docs: added documentation pages for experimental features

* fix content lint issues

* fixed lint errors

* added migration step

* added workflows introduction

* add installation guides

* added installation guides for modules + generated workflows reference

* added missing workflows reference link

* Added warning message for experimental features

* fix note

www/apps/docs/content/experimental/pricing/install-nodejs.md

@@ -0,0 +1,188 @@
+# Install in Node.js-Based Application
+
+In this document, you’ll learn how to setup and use the Pricing module in a Node.js based application.
+
+## Prerequisites
+
+Before installing the Pricing module in your application, make sure you have the following prerequisites:
+
+- Node.js v16 or greater
+- PostgreSQL database. You can use an existing Medusa database, or set up a new PostgreSQL database.
+
+---
+
+## Install Package
+
+In your Node.js-based applications, such as a Next.js application, you can install the Pricing module with the following command:
+
+```bash npm2yarn
+npm install @medusajs/pricing
+```
+
+---
+
+## Add Database Configuration
+
+Add the following environment variable to your application:
+
+```bash
+POSTGRES_URL=<DATABASE_URL>
+```
+
+Where `<DATABASE_URL>` is your database connection URL of the format `postgres://[user][:password]@[host][:port]/[dbname]`. You can learn more about the connection URL format in [this guide](../../development/backend/configurations.md#database_url).
+
+You can also set the following optional environment variables:
+
+- `POSTGRES_SCHEMA`: a string indicating the PostgreSQL schema to use. By default, it's `public`.
+- `POSTGRES_DRIVER_OPTIONS`: a stringified JSON object indicating the PostgreSQL options to use. The JSON object is then parsed to be used as a JavaScript object. By default, it's `{"connection":{"ssl":false}}` for local PostgreSQL databases, and `{"connection":{"ssl":{"rejectUnauthorized":false}}}` for remote databases.
+
+:::note
+
+If `POSTGRES_DRIVER_OPTIONS` is not specified, the PostgreSQL database is considered local if `POSTGRES_URL` includes `localhost`. Otherwise, it's considered remote.
+
+:::
+
+### Run Database Migrations
+
+:::note
+
+You can skip this step if you use an existing Medusa database.
+
+:::
+
+Migrations are used to create your database schema. Before you can run migrations, add in your `package.json` the following scripts:
+
+```json
+"scripts": {
+  //...other scripts
+  "price:migrations:run": "medusa-pricing-migrations-up",
+  "price:seed": "medusa-pricing-seed ./pricing-seed-data.js"
+},
+
+```
+
+The first command runs the migrations, and the second command allows you to seed your database with demo prices optionally.
+
+However, you’d need the following seed file added to the root of your project directory:
+
+<Details>
+  <Summary>Seed file</Summary>
+
+  ```js
+  const currenciesData = [
+    {
+      code: "USD",
+      symbol: "$",
+      symbol_native: "$",
+      name: "US Dollar",
+    },
+    {
+      code: "CAD",
+      symbol: "CA$",
+      symbol_native: "$",
+      name: "Canadian Dollar",
+    },
+    {
+      code: "EUR",
+      symbol: "€",
+      symbol_native: "€",
+      name: "Euro",
+    },
+  ]
+  
+  const moneyAmountsData = [
+    {
+      id: "money-amount-USD",
+      currency_code: "USD",
+      amount: 500,
+      min_quantity: 1,
+      max_quantity: 10,
+    },
+    {
+      id: "money-amount-EUR",
+      currency_code: "EUR",
+      amount: 400,
+      min_quantity: 1,
+      max_quantity: 5,
+    },
+    {
+      id: "money-amount-CAD",
+      currency_code: "CAD",
+      amount: 600,
+      min_quantity: 1,
+      max_quantity: 8,
+    },
+  ]
+  
+  const priceSetsData = [
+    {
+      id: "price-set-USD",
+    },
+    {
+      id: "price-set-EUR",
+    },
+    {
+      id: "price-set-CAD",
+    },
+  ]
+  
+  const priceSetMoneyAmountsData = [
+    {
+      title: "USD Price Set",
+      price_set: "price-set-USD",
+      money_amount: "money-amount-USD",
+    },
+    {
+      title: "EUR Price Set",
+      price_set: "price-set-EUR",
+      money_amount: "money-amount-EUR",
+    },
+  ]
+  
+  module.exports = {
+    currenciesData,
+    moneyAmountsData,
+    priceSetsData,
+    priceSetMoneyAmountsData,
+  }    
+  ```
+
+</Details>
+
+Then run the commands you added to migrate the database schema and optionally seed data:
+
+```bash npm2yarn
+npm run price:migrations:run
+# optionally
+npm run price:seed
+```
+
+---
+
+## Next.js Application: Adjust Configurations
+
+The Pricing module uses dependencies that aren’t Webpack optimized. Since Next.js uses Webpack for compilation, you need to add the Pricing module as an external dependency.
+
+To do that, add the `serverComponentsExternalPackages` option in `next.config.js`:
+
+```js title=next.config.js
+/** @type {import('next').NextConfig} */
+const nextConfig = {
+  experimental: {
+    serverComponentsExternalPackages: [
+      "@medusajs/pricing",
+    ],
+  },
+}
+
+module.exports = nextConfig
+
+```
+
+---
+
+## Start Development
+
+You can refer to the [Example Usages documentation page](./examples.md) for examples of using the Pricing module.
+
+You can also refer to the [Module Interface Reference](../../references/pricing/interfaces/IPricingModuleService.mdx) for a detailed reference on all available methods.