chore(docs): monorepos support

docs/docs/reference/cloud/monorepos.md

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+---
+title: "Monorepos"
+description: "Monorepos support in Gatsby Cloud"
+---
+
+## Introduction
+
+Gatsby Cloud has support for monorepos projects, but since there is a plethora of dependency management tools out there some issues can occure.
+This document will walk you through the tools that are supported and how to troubleshoot some edge cases
+
+## Monorepo Support
+
+The following tables shows the level of support for each tool
+
+**Legend**
+
+| Icon | Feature Capability                       |
+| ---- | ---------------------------------------- |
+| ●    | Fully Supported                          |
+| ◐    | Somewhat Supported (support is minimal ) |
+| ○    | Not Supported                            |
+
+**Support**
+
+| Tool.                            | Level of Support | Notes                                                   |
+| -------------------------------- | ---------------- | ------------------------------------------------------- |
+| Yarn Workspaces (v1)             | ◐                |                                                         |
+| Yarn Workspaces (v2/v3 with PnP) | ◐                |                                                         |
+| Lerna                            | ●                |                                                         |
+| NPM Workspaces (v7 and onwards)  | ●                |                                                         |
+| NX                               | ○                | Work is in progress                                     |
+| Turborepo                        | ○                | We do not have plans to support Turborepo at this time. |
+
+## Troubleshooting