Add info to admin dashboard if fee token was already spend

[mtbitcr]

[mtbitcr]

@codingpeanut157 i guess backend not ready for this now, or?

[codingpeanut157]

I can add an API in the admin-aggregator:

• frontend passes the token and the admin-aggregator checks if the proofs are spent against the swap-servic

[mtbitcr]

I can add an API in the admin-aggregator:

• frontend passes the token and the admin-aggregator checks if the proofs are spent against the swap-servic

let's do after demo