hl-frontends: rename liquid8 to Pocket Protector

[Flotapponnier]

Summary

• The "liquid8" slug came from the address's Hyperliquid referral code LIQUID8, not a project name. The builder address 0x7151...ad3c is Pocket Protector (pp.xyz), a Telegram social trading bot backed by Electric Capital and Dragonfly
• Acquired by dYdX mid-2025 and rebranded Pocket Pro Bot routing to dYdX, hence zero builder fees on Hyperliquid for 30d
• Renames the display name, updates the tag to reflect the acquisition, keeps the slug so URLs stay stable, adds the official logo

Sources: Flowscan builder registry, The Block (dYdX acquisition), x.com/pp_trading