Dev Console: Migrate Existing Superchain Relayer

[fainashalts]

superchainrelayer.xyz has seen increased usage, and was initially just built as a demo. We need to rebuild it and include it in the dev console for higher visibility and branding.

Requirements:

• rewrite the service found here with a focus on using the latest package versions and on scalability. This work should be architected in a way that it will be extensible for L2 to L2 relaying in the near future.
• add a frontend for the new relayer into the Dev Console (requires design)

[pharger]

@mayanksayshi needs design support. Will ship a short PRD on this.

[pharger]

PRD: https://docs.google.com/document/d/1lADII2uhih7ert5DgbTPLQwHha0rTtz6PZz2YKrN79g/edit?tab=t.0#heading=h.x2wzy8npphtw
cc: @fainashalts @hamdiallam @mayanksayshi