feat(shadcn): allow configurable file casing for components

[tobiasstrebitzer]

Description

Adds support for configurable file casing when installing components from the registry.

Changes

• Added change-case dependency to package.json
• Added fileCase setting to config schema (see enum options below)
• Updated transform-import.ts to ensure import dependencies follow the same case
• Updated update-files.ts to apply the file case setting

Supported File Cases

• camelCase: exampleComponent.tsx
• capitalCase: Example Component.tsx
• constantCase: EXAMPLE_COMPONENT.tsx
• dotCase: example.component.tsx
• kebabCase: example-component.tsx
• pascalCase: ExampleComponent.tsx
• pascalSnakeCase: Example_Component.tsx
• pathCase: example/component.tsx
• sentenceCase: Example component.tsx
• snakeCase: example_component.tsx
• trainCase: Example-Component.tsx

Testing

• ✅ Tested npx shadcn@latest add command to ensure file casing applies correctly
• ✅ Tested adding multiple components to ensure relative imports are correct
• ✅ Ensured all existing tests are passing

Related

• Fixes [feat]: Change component file name case #7593
• Fixes Feature request: Case option in CLI/config #1123

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