feat: alerts component

[tdashworth]

Closes #2

📑 Description

This PR includes most of the functionality for the Alert component as defined here: https://flowbite.com/docs/components/alerts/

✅ Checks

• [x] My pull request adheres to the code style of this project
• [x] My code requires changes to the documentation
• [ ] I have updated the documentation as required
• [x] All the tests have passed
• [x] My pull request is based on the latest commit/version

If your branch is behind the upstream master, I will have difficulties to merge the request. Please fetch the latest version of the branch:

git checkout your-branch
git pull upstream main

or

git checkout your-branch
git pull --rebase upstream main

ℹ Additional Information