Different emojis for different commands

[EverlastingBugstopper]

Before

SUBCOMMANDS:
    kv:namespace    🗂️  Interact with your Workers KV Namespaces
    kv:key          🗂️  Individually manage Workers KV key-value pairs
    kv:bulk         🗂️  Interact with multiple Workers KV key-value pairs at once

After

SUBCOMMANDS:
    kv:namespace    🗂️  Interact with your Workers KV Namespaces
    kv:key          🔑  Individually manage Workers KV key-value pairs
    kv:bulk         💪  Interact with multiple Workers KV key-value pairs at once