Remove Desktopserver references from the docs

[mayankgupta]

​DesktopServer has shut down and isn't available anymore.

URL of the Pages with the Issue

• ​Installing a local server
• ​Installing DesktopServer
• ​Installing from Zip
• ​WampServer
• ​SVN
• ​Getting Started
• ​Contribute

Section of Page with the issue

• ​Which local server should I install?
• Whole Document Page of ​Installing DesktopServer

Why is this a problem?

DesktopServer has already announced that they're shutting down.

Suggested Fix

Replace it with Open-source tool, DDEV. (#56879)

[sabernhardt]

Thanks for the report!

For a status update:

1. DesktopServer was already removed from the content of ​Installing a Local Server years ago.
2. I made a few small edits today:
   • Removed from list on ​with Code:
     "We have tutorials on the following methods: VVV, DesktopServer, MAMP, WampServer, XAMPP."
   • Removed from list on ​Getting Started:
     "Popular alternatives include DesktopServer, MAMP, WampServer, XAMPP, and others."
   • Edited sentence for ​Installing WampServer:
     "such as another local server (XAMPP, DesktopServer, etc.), WebDAV, or Skype." is changed to
     "such as XAMPP or another local server, WebDAV, or Skype."
3. I do not feel comfortable removing the "Installing DesktopServer" page by myself. Also, could a redirect to the main "Installing a Local Server" page be appropriate, or should it simply give the 404 error?
4. Both ​Installing from a Zip File and ​Installing via SVN still contain special notes that begin "Note: If you are using DesktopServer as your local server..." Those notes link to the Installing DesktopServer page, so the notes could remain until the page is gone.
5. For additional options, I found a draft for Installing Docker. (I think I saw that handbook page published at some point, but it is currently a draft.)

(The Documentation Issue Tracker had two reports about the DesktopServer page: ​400 and ​522)