docs: add short descriptions to some components

[gui-santos]

Purpose of PR

This PR will add new descriptions created by @domarku to the following components:

• Accordion
• Asset
• AssetCard
• Autocomplete
• Badge
• Button
• ButtonGroup
• Card
• Collapse
• CopyButton
• EntryCard
• IconButton
• ToggleButton

And it moves examples to TS files for the following components:

• AssetCard
• Collapse
• EntryCard

PR Checklist

• I have read the relevant readme.md file(s)
• All commits follow our Git commit message convention
• Tests are added/updated/not required
• Tests are passing
• Storybook stories are added/updated/not required
• Usage notes are added/updated/not required
• Has been tested based on Contentful's browser support
• Doesn't contain any sensitive information

[changeset-bot]

⚠️ No Changeset found

Latest commit: f3b85e0

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

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