NO-TICKET: Started Gherkin features

[jirhiker]

Why

This PR addresses the following problem / context:

• We need to start defining user stories to drive development.

How

Implementation summary - the following was changed / added / removed:

• added a gherkin feature file to describe the main function of wellpy
• added a gherkin feature file to describe report generation
• added a gherkin feature file to describe well inventory
• added a gherkin feature file to describe water level entry
• added a gherkin feature file to describe bulk chemistry upload
• added a gherkin feature file to describe searchbar functionality
• added a gherkin feature file to describe a well visit
• added a gherkin feature file to describe CRUD functionality

Notes

Any special considerations, workarounds, or follow-up work to note?

• Use bullet points here

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ All tests successful. No failed tests found.

[jirhiker]

I've created a branch specifically for Gherkin features. use the features branch moving forward