Document hydromt install via deltaforge

[hboisgon]

HydroMT version checks

• [X] I have checked that the issue still exists on the latest versions of the docs on main here

Kind of issue

Docs are missing

Location of the documentation

Installation guide

Documentation problem

For users that are not familiar with python, HydroMT and some of its plugins are available to install using Deltaforge.

Maybe we can decide to document this download and install option in our docs?

Another use case to install like this is for example, as we do not have an executable, for external tools like Delft-FEWS, this makes install, deployment and use easier than classic python installation and use.

Suggested fix for documentation

Decide if we want to document or link Deltaforge in our installation guide documentation.

[savente93]

We could but there are a few considerations:

1. deltaforge seems to be only available for windows
2. if we reference deltarofge we should also make sure the versions there are up to date. We should then probably also add it to the release workflow, and I'm not familiar with how that would be updated.
3. I have little insight into how deltafore works exactly so support from our side might be difficult.

If we can work through these issues, then supporting deltaforge is an option, but I think they need to be worked out brefore we commit to it