docs: core funtionalities section

[hejsztynx]

Summary

The Core functionalities section in the docs

• Styling the input
• Rendering rich text
• Handling events
• Web support

[Copilot]

Pull request overview

Adds a new “Core functionalities” section to the documentation, describing how to style EnrichedTextInput, render read-only rich text via EnrichedText, handle editor events, and use the library on the web.

Changes:

• Added new rich-text rendering documentation page (MDX) with a live interactive example.
• Filled in the previously-blank “Styling the input”, “Handling events”, and “Web support” docs pages.
• Added a new docs example component (RenderingEditor) and removed the old placeholder Markdown page.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
docs/src/examples/RenderingEditor.tsx	New interactive example used by the docs to render HTML from the editor into EnrichedText.
docs/docs/core-functionalities/web-support.md	Documents web implementation details, shortcuts, platform differences, sanitization, and SSR guidance.
docs/docs/core-functionalities/styling-the-input.md	Documents style vs htmlStyle and lists supported htmlStyle keys/options.
docs/docs/core-functionalities/rendering-rich-text.mdx	New MDX page explaining EnrichedText, styling, notable props, and includes a live example.
docs/docs/core-functionalities/rendering-rich-text.md	Removes the old placeholder page in favor of the new MDX version.
docs/docs/core-functionalities/handling-events.md	Documents available callbacks/events and provides guidance on when to use onChangeHtml vs getHTML().

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[kacperzolkiewski]

We don't want it to be styled the same way as other buttons?