Match Horizon Payments to Campaigns

[ayshadogo]

Description:
Match incoming Horizon payments to the correct StellarAid campaign.

Tasks:

• Create worker/src/tasks/payment_matcher.rs
• For each payment, look up the destination address in the campaign DB
• Return the matching campaign_id or None if no match
• Handle the case where a payment destination belongs to a completed or suspended campaign
• Log unmatched payments for debugging

Acceptance Criteria:
Payments are correctly matched to campaigns; unmatched and invalid state payments are logged and skipped.

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[nanaabdul1172]

Hi maintainer I have thoroughly read the description to this issue and I can resolve this according to the description required ensuring it meet all the acceptance criteria kindly assign..