Adding the first draft of project charter

[malvikasharan]

Summary

This document comprises details as the project charter as listed in issue #5

What should reviewers focus on

• if the document provides all information
• if the sections cover all aspects of the project charter
• if everything looks good

[malvikasharan]

Thanks Kirstie. I will make a new PR to add a Gantt chart - but will merge it now.