[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/common/FilePreviewCommon.md

@@ -8,6 +8,8 @@ Monaco preview enables to display developer files. It is based on [Microsoft's M
 
 This previewer is used for the File Explorer Dev File Previewer, as well as PowerToys Peek.
 
+For a general overview of how Monaco is used in PowerToys, see the [Monaco Editor documentation](monaco-editor.md).
+
 ### Update Monaco Editor
 
 1. Download Monaco editor with [npm](https://www.npmjs.com/): Run `npm i monaco-editor` in the command prompt.