Pixi for installation and execution

[fangohr]

Here is a pull request that introduces pixi for installation of the python tool. I have also added the tasks to the pixi.toml file, and documented this in the src/README.md.

Perhaps @santaep or @HoWilgh can try if this works if they follow the instructions.

If you are happy, do merge.

[samjrholt]

Looks good. I've successfully installed and run the first two tasks but get an error running the docs task

[thomasschrefl]

Looks good. I've successfully installed and run the first two tasks but get an error running the docs task

I do not where this error comes from. By the way in the meantime, I changed doc section of the create.sh script.
We should also update the pixi task accordlingy.

[fangohr]

I fixed the error that Tom saw by merging the changes on the main branch into this PR.

[fangohr]

This is ready to be merged, I think.

[fangohr]

We still have an error that occurs, but that has nothing todo with the addition of the pixi-based software installation or task execution: it also occurs on main when running the create.sh script.

With this merge request , we can and will do the build (equivalent to running create.sh) for every change to the repository, and that will tell us early if something is broken.

I have added a "badge" like this

to the README (at the very bottom for now) to quickly see the status.

@samjrholt are you happy for this to be merged?