Add vault state daily metrics

[toliaqat]

No description provided.

[rabi-siddique]

I am using a3p latest for testing.

Daily Metrics when the Chain Starts:

Daily Metrics when I create 2 vaults from different accounts:

Shouldn't it increment the previous value of 8 active vaults to 10? And also the numClosedVaultsLast is set to 0, when I created a vault.

[rabi-siddique]

After I ensure a vault is liquidating:

The numActiveVaultsLast is still 2.

Same when I ensure the vault is liquidated:

Perhaps when we are updating our counts for active, closed, liquidating and liquidated, we should decrement the previous state count? For example, if a vault is liquidating, we can do:

liquidating = 1;
active = -1;