forms-buttons: missing examples and tuning

[jjagielka]

📑 Description

• Added Radio in dropdown and Checkbox in dropdown
• Format adjustments to Search example in Dropdown
• Dropdown - floating menu added Radio/Checkbox prefixes to sections.
• Some other polishing here and there

Flowbite introduces anomaly of dark colors when forms are put on another component. This is visible when Checkbox or Radio is put on Dropdown for example. That's why I've added tinted property to those.
I needed to add tinted property to SimpleSearch for the same reason.

✅ Checks

• My pull request adheres to the code style of this project
• My code requires changes to the documentation
• I have updated the documentation as required
• All the tests have passed
• My pull request is based on the latest commit/version

ℹ Additional Information

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Name	Status	Preview	Updated
flowbite-svelte	✅ Ready (Inspect)	Visit Preview	Jul 20, 2022 at 10:32PM (UTC)
flowbite-svelte-update	✅ Ready (Inspect)	Visit Preview	Jul 20, 2022 at 10:32PM (UTC)

[shinokada]

Thank you for the PR. I will merge it soon.

I noticed you use $$restProps.class.
Generally I use $$props.class if there is one section.
If I want to add class to divClass, I use $$props.classDiv.
(for labelClass, $$props.classLabel, etc)
What do you think?