Add categories and better text tools

[shivamshrma09]

Finding memes is a pain. Have to scroll forever or guess the exact name.

Current issues:

• Can only search by exact name
• No way to browse by type
• Text editor is too basic
• No keyboard shortcuts

What would help:

• Category buttons (Funny, Reaction, etc.)
• Better search with clear button
• CAPS button for text
• Keyboard shortcuts like Ctrl+S

Would make creating memes so much faster and easier.