feat(toolkit): New dark mode components (#475)
* chore: update checkbox theme to 'ecg' in ConversationListHeader and FilesTab components
* feat(toolkit): update Switch to new theme
* feat(toolkit): add radio group
* Update src/interfaces/assistants_web/src/components/Shared/Checkbox/Checkbox.tsx
Co-authored-by: Tomeu <tomeu@cohere.com>
* feat(toolkit): add radio group
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Co-authored-by: Tomeu <tomeu@cohere.com>
