MVP: Contract Monitor util

[frrist]

To Run:
./forgectl payments monitor --db-url='postgres://localhost:5432/postgres' --payer=0x8d3d7cE4F43607C9d0ac01f695c7A9caC135f9AD

Current Schema Design:

One example query we can use to monitor out locked funds, see how much longer its to remained locked, and trigger alerts from when they run low.

See locked balance alongside operator allowances:

payer	total_funds	locked_balance	available_balance	operator_approved	lockup_allowance	lockup_used	lockup_remaining	last_updated
0x8d3d7cE4F43607C9d0ac01f695c7A9caC135f9AD	10.00000000101	0.016346519176446734	9.9836534818335533	true	0.3000000000000096	0.0137372374706112	0.2862627625293984	2025-10-25 02:04:22.170967 +00:00