Alert composition

[mwarman]

📢 Instructions

• Begin with a DRAFT pull request.
• Follow italicized instructions to add detail to assist the reviewers.
• After completing all checklist items, change the pull request to READY.

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🔧 Change Summary

Describe the changes included in this pull request. Link to the associated GitHub issue(s).

• fixes Alert composition #47
• Update the Alert component to use component composition.
• Added the AlertContent, AlertHeader, AlertTitle, and AlertDescription components to compose the content of an Alert.
• Added the ErrorAlert component which provides an opinionated composition of an error alert block.

📝 Checklist

Pull request authors must complete the following tasks before marking the PR as ready to review.

• Complete a self-review of changes
• Unit tests have been created or updated
• The code is free of [new] lint errors and warnings
• Update storybook stories as needed
• Update project documentation as needed, README, JSDoc, etc.

🧪 Steps to Test

Describe the process to test the changes in this pull request.

1. You may use Storybook to view the Alert.

Alternatively you may view alerts by:

1. Sign in with invalid credentials.
2. Create a task and then try to edit that task.

🔗 Additional Information

Optionally, provide additional details, screenshots, or URLs that may assist the reviewer.

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