Add information about how to add new languages to monaco (#24906)

* Add information about how to add new languages to monaco

* Update expect.txt

* Update doc/devdocs/modules/FileExplorer/monaco/readme.md

Co-authored-by: Jay <65828559+Jay-o-Way@users.noreply.github.com>

* Adress PR feedback

* fix spelling errors

* Update doc/devdocs/modules/FileExplorer/monaco/readme.md

Co-authored-by: Heiko <61519853+htcfreek@users.noreply.github.com>

* Update readme.md

* Update readme.md

* Address PR comments

* Fix spelling

* address PR comments

* address PR comments and move files

* Update expect.txt

* Update doc/devdocs/common/readme.md

Co-authored-by: Heiko <61519853+htcfreek@users.noreply.github.com>

* Update doc/devdocs/common/FilePreviewCommon.md

Co-authored-by: Heiko <61519853+htcfreek@users.noreply.github.com>

* Update doc/devdocs/common/FilePreviewCommon.md

Co-authored-by: Heiko <61519853+htcfreek@users.noreply.github.com>

* Update doc/devdocs/common/FilePreviewCommon.md

Co-authored-by: Heiko <61519853+htcfreek@users.noreply.github.com>

* Update doc/devdocs/common/FilePreviewCommon.md

Co-authored-by: Heiko <61519853+htcfreek@users.noreply.github.com>

* Update doc/devdocs/common/FilePreviewCommon.md

Co-authored-by: Stefan Markovic <57057282+stefansjfw@users.noreply.github.com>

* Apply suggestions from code review

Co-authored-by: Stefan Markovic <57057282+stefansjfw@users.noreply.github.com>

* Adress PR comments

* Fix spelling

* Adress PR comments

* Add peek stub documentation

* Update doc/devdocs/common/FilePreviewCommon.md

Co-authored-by: Stefan Markovic <57057282+stefansjfw@users.noreply.github.com>

* Update doc/devdocs/common/FilePreviewCommon.md

* Fix spelling

---------

Co-authored-by: Jay <65828559+Jay-o-Way@users.noreply.github.com>
Co-authored-by: Heiko <61519853+htcfreek@users.noreply.github.com>
Co-authored-by: Stefan Markovic <57057282+stefansjfw@users.noreply.github.com>

doc/devdocs/modules/peek/readme.md

@@ -0,0 +1,7 @@
+# PowerToys Peek
+
+> Documentation is currently under construction
+
+## Dev file previewer
+
+The previewer for developer files uses the project in [FileExplorerCommon] common project to render monaco. You can find its documentation here: [/doc/devdocs/common/FilePreviewCommon.md](/doc/devdocs/common/FilePreviewCommon.md).

doc/devdocs/modules/powerpreview/monaco/readme.md

@@ -1,24 +0,0 @@
-# Developer Preview (Monaco)
-
-Developer preview is based on [Microsoft's Monaco Editor](https://microsoft.github.io/monaco-editor/) which is maintained by the Visual Studio Code team.
-
-## Update monaco editor
-
-1. Download Monaco editor with npm: `npm i monaco-editor`.
-2. Delete everything except the `min` folder (the minimised code).
-3. Copy the `min` folder inside the [`monacoSRC`](/src/modules/previewpane/MonacoPreviewHandler/monacoSRC) folder.
-4. Generate the JSON file (see section below)
-
-## monaco_languages.json
-
-[`monaco_languages.json`](/src/modules/previewpane/MonacoPreviewHandler/monaco_languages.json) contains all extensions and Id's for the supported languages of Monaco. The [`FileHandler`](/src/modules/previewpane/MonacoPreviewHandler/FileHandler.cs) class and the installer are using this file.
-
-### Generate monaco_languages.json file
-
-After you updated monaco editor or adding a new language you should update the [`monaco_languages.json`](/src/modules/previewpane/MonacoPreviewHandler/monaco_languages.json) file.
-
-You have to run the file on a local webserver!
-
-1. Build monaco in debug mode.
-2. Open [generateLanguagesJson.html](/src/modules/previewpane/MonacoPreviewHandler/generateLanguagesJson.html) in a browser.
-3. Replace the old JSON file.