[Feature]: Full emoji picker component for expanded emoji selection

[cuevaio]

Problem Statement

Users want access to more emojis than what is currently available. The existing emoji options are limited, which restricts users' ability to express themselves and react to ideas on the board in diverse ways.

Proposed Solution

Add a comprehensive emoji picker component that allows users to select from the full range of emojis. This could include:

1. A searchable emoji picker component (similar to Slack, Discord, or GitHub)
2. Emoji categories (smileys, animals, food, activities, objects, symbols, flags, etc.)
3. Recently used emojis section for quick access
4. Search functionality to find emojis by name/keyword
5. Consider using an existing library like emoji-mart or emoji-picker-react for a polished experience

The picker could be used for:

• Card reactions/voting
• Card content (if text supports emojis)
• Any other areas where emojis are currently used

Feature Category

UI/UX Improvements

Primary User Benefit

All users equally

Alternatives Considered

Not specified - users could currently copy-paste emojis from external sources, but this is cumbersome and breaks the workflow.

Mockups or Examples

Not provided - reference implementations exist in apps like Slack, Notion, Discord, and GitHub which all feature comprehensive emoji pickers.

How important is this feature to you?

Would significantly improve my experience

Additional Context

Popular emoji picker libraries for React:

• @emoji-mart/react - Feature-rich, customizable
• emoji-picker-react - Lightweight, easy to integrate

The component should be consistent with the existing shadcn/ui design system and support both light and dark themes.