refactor(radio-group): hlm-radio component and fix card styles

[marcjulian]

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our
  guidelines: https://github.com/goetzrobin/spartan/blob/main/CONTRIBUTING.md#-commit-message-guidelines
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Documentation content changes
• Other... Please describe:

Which package are you modifying?

• accordion
• alert
• alert-dialog
• aspect-ratio
• avatar
• badge
• button
• calendar
• card
• checkbox
• collapsible
• combobox
• command
• context-menu
• data-table
• date-picker
• dialog
• dropdown-menu
• hover-card
• icon
• input
• label
• menubar
• navigation-menu
• pagination
• popover
• progress
• radio-group
• scroll-area
• select
• separator
• sheet
• skeleton
• slider
• sonner
• spinner
• switch
• table
• tabs
• textarea
• toast
• toggle
• tooltip
• typography

What is the current behavior?

Closes #246

Card styles are incorrect, because of inline styles on the label in brn-radio

What is the new behavior?

• Card styles are correctly working with removed inline styles from label.
  
• Replaces hlm-radio.directive.ts with hlm-radio.component.ts
• Add data-slot to brn-radio to target label and indicator-div with styles
• Update card styles to use data-slot=label

Does this PR introduce a breaking change?

• Yes
• No

Replaces hlm-radio.directive.ts with hlm-radio.component.ts and changes the markup

<hlm-radio-group>
- <brn-radio hlm value="16.1.4">
+ <hlm-radio value="16.1.4">
    <hlm-radio-indicator indicator />
    v16.1.4
- </brn-radio>
+ </hlm-radio>
</hlm-radio-group>

Other information

[goetzrobin]

I wonder how much effort it would be to write a @ashley-hunter -esque migration for this.
@marcjulian would you be willing to take a shot at that or should I take a look?

[ashley-hunter]

It should be fairly easy, I believe we had a similar migration for icons, but if anyone wants any help, just let me know!