Feat: DR create a tag

[notdanross]

Description

Added route and SQL query to insert new tags into the database.

Fixes #8

Type of change

• [x] New feature (non-breaking change which adds functionality)
• [x] This change requires a documentation update

Testing Instructions

Please describe the tests required to verify your changes. Provide instructions so PR Tester can check functionality. Please also list any relevant details for your tests

git fetch --all
git checkout dr-createATag

checkout to CLIENT branch as well go to: http://localhost:3000/tags/create

Type in the text field, then submit.

To see the new tag, from your .sql file run: SELECT * FROM Tags;

Checklist:

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [ ] I have commented my code, particularly in hard-to-understand areas
• [x] My changes generate no new warnings or errors
• [x] I have added test instructions that prove my fix is effective or that my feature works