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-medusa.mdx

@@ -0,0 +1,164 @@
+import DocCard from '@theme/DocCard'
+import Icons from '@theme/Icon'
+import Tabs from '@theme/Tabs';
+import TabItem from '@theme/TabItem';
+
+# Install Pricing Module in Medusa
+
+In this document, you'll learn how to install the Pricing module using NPM in the Medusa backend.
+
+## Step 1: Install Module
+
+To install the Pricing module, run the following command in the root directory of the Medusa backend:
+
+```bash npm2yarn
+npm install @medusajs/pricing
+```
+
+---
+
+## Step 2: Add Module to Configurations
+
+In `medusa-config.js`, add the pricing module to the exported object under the `modules` property:
+
+```js title=medusa-config.js
+module.exports = {
+  // ...
+  modules: {
+    // ...
+    pricingService: {
+      resolve: "@medusajs/pricing",
+    },
+  },
+}
+```
+
+---
+
+## Step 3: Run Migrations
+
+Run the following command to reflect schema changes into your database:
+
+```bash
+npx medusa migrations run
+```
+
+---
+
+## Use the Module
+
+You can now start using the module's `PricingModuleService` by resolving it through [dependency injection](../../development/fundamentals/dependency-injection.md).
+
+For example:
+
+<Tabs groupId="resource-type" isCodeTabs={true}>
+  <TabItem value="api-route" label="API Route" attributes={{
+    title: "src/api/store/custom/route.ts"
+  }} default>
+
+    ```ts
+    import type { 
+      MedusaRequest, 
+      MedusaResponse
+    } from "@medusajs/medusa";
+    import { 
+      PricingModuleService
+    } from "@medusajs/pricing"
+
+    export async function GET(
+      req: MedusaRequest, 
+      res: MedusaResponse
+    ) {
+      const pricingModuleService = req.scope.resolve(
+        "pricingModuleService"
+      )
+
+      return res.json({
+        pricings: pricingModuleService.list()
+      })
+    }
+    ```
+
+  </TabItem>
+  <TabItem value="subscribers" label="Subscribers" attributes={{
+    title: "src/subscribers/create-customer.ts"
+  }}>
+
+    ```ts
+    import { 
+      type SubscriberConfig, 
+      type SubscriberArgs,
+      PricingService,
+    } from "@medusajs/medusa"
+    import { 
+      PricingModuleService
+    } from "@medusajs/pricing"
+
+    export default async function handleListPriceSets({ 
+      data, eventName, container, pluginOptions 
+    }: SubscriberArgs<Customer>) {
+      const pricingModuleService = container.resolve(
+        "pricingModuleService"
+      )
+
+      console.log(await pricingModuleService.list())
+    }
+
+    export const config: SubscriberConfig = {
+      event: PricingService.Events.CREATED,
+      context: {
+        subscriberId: "list-pricings"
+      }
+    }
+    ```
+
+  </TabItem>
+  <TabItem value="service" label="Service" attributes={{
+    title: "src/service/hello.ts"
+  }}>
+
+    ```ts
+    import { TransactionBaseService } from "@medusajs/medusa"
+    import { 
+      PricingModuleService
+    } from "@medusajs/pricing"
+
+    class HelloService extends TransactionBaseService {
+      private pricingModuleService: PricingModuleService
+
+      constructor(container) {
+        super(container)
+        this.pricingModuleService = container.pricingModuleService
+      }
+
+      await listPriceSets() {
+        return await this.pricingModuleService.list()
+      }
+    }
+
+    export default HelloService
+    ```
+
+  </TabItem>
+</Tabs>
+
+:::tip
+
+In the Examples or API Reference guides, you may see an initialization of the pricing module. This is only necessary if you're using the module outside the Medusa backend.
+
+:::
+
+---
+
+## Up Next
+
+<DocCard item={{
+    type: 'link',
+    href: '/references/pricing',
+    label: 'Service Interface Reference',
+    customProps: {
+      icon: Icons['academic-cap-solid'],
+      description: 'Find a full reference of the module\' service interface\s methods.'
+    }
+  }}
+/>