Test/expand tests

[salihudickson]

Description

This PR aims to simplify and expand tests for the ecc-utils design form, it also sets a standard for how the other tests for how tests for the other components will be written.

Summary by Sourcery

Expand and refactor tests for the ecc-utils design form to cover a wider range of input types and field options, and improve test component modularity.

Enhancements:

• Refactor test components to improve modularity and reusability by introducing new classes for different field types.

Tests:

• Expand and simplify tests for the ecc-utils design form, covering various input types, field options, and form behaviors.

Chores:

• Add @types/mocha as a new development dependency in package.json.