Update install_and_test.md

#

```

In case you need to work on many modules, you can clone and install all default packages with the [cloneall.bash](cloneall.bash) script:

```bash

wget https://www.ict.inaf.it/gitlab/hotwheels/gitlab-profile/-/raw/main/cloneall.bash

./cloneall.bash -cp # will clone and pip-install all hotwheels modules

```

If you want to create a folder with all the modules soft-linked into the folder `hotwheels/*`, add the flag `-l` to `cloneall.bash` to get this folder tree in a folder named `full/hotwheels/*`. This is helpful in navigating the files with the IDE when development has strong refactoring and one need to edit multiple modules.

If you want to also create a multi-windows tmux session where each panel corresponds to a hotwheels module add the flag `-t` to `cloneall.bash` (will laso include the folder `full` if exists).

You can insert a personalised number of repos by running for instance `cloneall.bash [..] -r core octree` (will only download core and octree module).

# Run tests