Include ICR and CCO2 credit issuance in activeCredits under polygon-digital-carbon

[0xAurelius]

We need to make sure that the total DCM supply metric under Epoch includes all active credits issued from credible registries (read: accepted for inclusion in the ecosystem via KlimaDAO governance)

Right now we only capture Toucan, C3 and Moss one-way bridged credits - this logic must be extended to support the additional credits already in circulation from ICR and Coorest:

klima-subgraph/polygon-digital-carbon/src/TransferHandler.ts

Line 159 in 9bac0a5

if (from == ZERO_ADDRESS) {

NOTE: need to make sure CCO2 is calculated in terms of kgs and converted to tonnes for the total supply metric (since CCO2 is denominated in kgs). ICR also has a diff decimal amount, but is denominated in tonnes.