[DOCS] Update README.md

[amangoel185]

• Add module information to README.md
• Update maintainers

[klieret]

Copy the intro paragraph after #55 is done

[klieret]

Should take the template from https://github.com/hsf-training/carpentry-cookiecutter

[klieret]

Also maybe paste logos from mpl and mplhep into readme

[stale]

This issue or pull request has been automatically marked as stale because it has not had recent activity. Please manually close it, if it is no longer relevant, or ask for help or support to help getting it unstuck. Let me bring this to the attention of @klieret @wdconinc @michmx for now.