support v3 vault

[mendesfabio]

Gauge system is agnostic to Balancer versions but we have a Vault address hard-coded here just to verify if a given address is a pool registered in the Vault.

Once V3 is deployed, we have to add V3 Vault address and adaptisPoolRegistered function to support both versions.

gauges-subgraph/src/utils/constants.ts

Line 41 in 2fece20

export const VAULT_ADDRESS = Address.fromString(

gauges-subgraph/src/utils/misc.ts

Line 64 in 2fece20

export function isPoolRegistered(poolAddress: Address): boolean {