Rename relayer to solver

[JayJay1024]

• And update description

Close #842

PR-Codex overview

This PR focuses on renaming and rebranding elements from Relayer to Solver throughout the application, reflecting a shift in terminology and possibly functionality. It also updates descriptions and titles to align with this new focus.

Detailed summary

• Changed Relayer to Solver in header.tsx navigation configuration.
• Updated routing in router.tsx to include Solver.
• Revised the description in README.md to reflect the new focus.
• Renamed application in vite.config.ts and walletconnect-provider.tsx.
• Updated UI labels and titles in various components to replace Relayer with Solver.
• Adjusted descriptions in modals and tables to align with the new terminology.
• Modified fee and margin descriptions to reference Solver instead of Relayer.

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Latest commit: 183c45e

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