[DevDocs] More content and restructure (#40165)

## Summary of the Pull Request
Accumulated information from internal transition about the modules
development, and reworked it to be added in dev docs. Also the dev docs
intself was restructured to be more organized. New pages was
verified by transition team.

## PR Checklist
- [x] **Dev docs:** Added/updated

---------

Co-authored-by: Zhaopeng Wang (from Dev Box) <zhaopengwang@microsoft.com>
Co-authored-by: Hao Liu <liuhao3418@gmail.com>
Co-authored-by: Peiyao Zhao <105847726+zhaopy536@users.noreply.github.com>
Co-authored-by: Mengyuan <162882040+chenmy77@users.noreply.github.com>
Co-authored-by: zhaopeng wang <33367956+wang563681252@users.noreply.github.com>
Co-authored-by: Jaylyn Barbee <51131738+Jaylyn-Barbee@users.noreply.github.com>

doc/devdocs/modules/workspaces.md

@@ -0,0 +1,34 @@
+# Workspaces
+
+[Public overview - Microsoft Learn](https://learn.microsoft.com/en-us/windows/powertoys/workspaces)
+
+## Quick Links
+
+[All Issues](https://github.com/microsoft/PowerToys/issues?q=is%3Aopen%20label%3AProduct-Workspaces)<br>
+[Bugs](https://github.com/microsoft/PowerToys/issues?q=is%3Aopen%20label%3AIssue-Bug%20label%3AProduct-Workspaces)<br>
+[Pull Requests](https://github.com/microsoft/PowerToys/pulls?q=is%3Apr+is%3Aopen+label%3AProduct-Workspaces)
+
+## Overview
+
+Workspaces is a PowerToys module that allows users to save and restore window layouts for different projects or workflows.
+
+## Links
+
+- [Source code folder](https://github.com/microsoft/PowerToys/tree/main/src/modules/Workspaces)
+- [Issue tracker](https://github.com/microsoft/PowerToys/issues?q=is%3Aissue+label%3AWorkspaces)
+
+## Implementation Details
+
+TODO: Add implementation details
+
+## Debugging
+
+TODO: Add debugging information
+
+## Settings
+
+TODO: Add settings documentation
+
+## Future Improvements
+
+TODO: Add potential future improvements