[Feature] Add fancy text generator

[yeleepark]

Summary

Add a Fancy Text Generator for converting plain text into social-profile-friendly Unicode text styles that can be copied into Instagram bios, captions, TikTok profiles, Threads posts, and similar platforms.

Why

Creators and social media users often want short styled text for bios, captions, profile names, announcements, and highlight phrases. This is a lightweight, practical text utility that broadens oddkit beyond developer-focused tools while staying local-first and copy-friendly.

Proposed scope

• Accept plain text input
• Generate multiple Unicode style variants such as bold, italic, script, monospace, double-struck, fullwidth, circled, and upside-down where feasible
• Preserve unsupported characters instead of dropping them
• Copy individual style outputs to the clipboard
• Include a short note that styled Unicode may render differently across platforms and can affect accessibility
• Process everything locally in the browser

UX notes

• Show style outputs as a scannable list with copy actions
• Keep the input visible while browsing generated variants
• Make clear that this is Unicode text styling, not real font file conversion
• Suggested microcopy: // plain text, dressed up

Acceptance criteria

• Plain Latin letters and numbers are converted into multiple styled variants
• Unsupported characters, including non-Latin text, are preserved safely
• Each generated variant can be copied independently
• Empty input and long input are handled gracefully
• No input text is uploaded to a server