Component: Button migration 1: TextButton (#7537)

## Summary

Setup the variants and migrate existing uses of
TextButton/TextIconButton/IconButton to a single Button component.

Still a work in progress.

## Changes

- **What**: Add a new Button
- **What**: Migrate old buttons
- **What**: Delete old buttons
- **Dependencies**: CVA, upgrade Storybook

## Review Focus

<!-- Critical design decisions or edge cases that need attention -->

<!-- If this PR fixes an issue, uncomment and update the line below -->
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## Screenshots (if applicable)

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┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-7537-WIP-Component-Button-migration-2cb6d73d36508156a81bfc7bbddb36e9)
by [Unito](https://www.unito.io)

---------

Co-authored-by: GitHub Action <action@github.com>

package.json

@@ -161,6 +161,7 @@
     "algoliasearch": "catalog:",
     "axios": "catalog:",
     "chart.js": "^4.5.0",
+    "cva": "catalog:",
     "dompurify": "^3.2.5",
     "dotenv": "catalog:",
     "es-toolkit": "^1.39.9",