Add assessment repo

Description

Due to the new assessment repo, the website needs to be updated. A new tab "Assessment" is created and the ecological_assessment description moved and extended. Additionally, the library emissionsInventory is documented.

Related Issue(s)

Related to unicado-package#59

Other Changes

Deleted ecological_assessment from aircraft design

Screenshots/Logs

NA

Testing Instructions

As usual, see gitlab.io README

Developer Checklist

• Code has been tested locally and/or in pipeline.
• (if applicable) documentation updated.
• (if applicable) impact of new dependencies reviewed and included in project.
• Merge conflicts resolved with the target branch.