DB Invariant tests

[Schwartz10]

Macro invariants (system wide aggregates):

• Aggregate total shares in the DB should match the iFIL.totalSupply()
• Total agents in database should match agentCount in the agentFactory link
• Total principal added up for all agents in the DB should match pool.totalBorrowed()
• Total assets from DB match pool.totalAssets.
• The total active miners in the DB should match the total miners in the contracts link
• Total interest paid across all agents should match the total lifetime earnings (TBD on how to do this - should be able to deduce this from iFIL price x iFIL circulation?)

Micro invariants (on a per account basis):

• The Agent's liquid FIL should match what's in the contract link
• The agent's principal should match db vs contracts link
• Depositor total shares should match iFIL.balanceOf()

[jimpick]

Additionally, we want to match:

ComputeAgentData from go-pools

• https://github.com/glifio/go-pools/blob/0eeb3b4e1498024d0d0bd46ead2f9e9bbebcff85/econ/econ.go#L16

With equivalent SQL data from:

• https://github.com/glifio/pools-events/blob/1ea1ad8d251ae754c988605a91cf844b18a3cd92/pkg/pool/agents.go#L246

[jimpick]

#3 implements Total Assets, Total Borrowed and Agent Count

[Schwartz10]

• Depositors balance should never be 0
• iFIL price matches pool.convertToAssets(1e18) (ganzai just coded up a ifil price db fetcher)

[jimpick]

#12 implements Pool Total Assets, Total Borrowed and Agent Count

[jimpick]

#14 Checks the miner counts for each agent on the node and compares to the API

[jimpick]

#16 Checks the agent principal using the econ endpoint (which calls it liabilities)