Add rendering support for user-defined types

[jamiebrynes7]

Description

This PR adds support for rendering user-defined schema types in the Worker Inspector.

• We generate a VisualElement implementation for each schema type.
• This is then used in components and other types to opaquely render the schema type.

Each type has indented labels (which does then indent the field, we can look at resolving this later, but its non-trivial).

This PR also fixed some of the styling issues (where the fields were entirely grayed out due to an opacity setting).

Tests

Eyeball test with nested types.

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!

0 Bugs
0 Vulnerabilities (and 0 Security Hotspots to review)
0 Code Smells

0.0% Coverage
0.0% Duplication