refactor: check for contract deployment before creating pn

[alexandre-abrioux]

supersedes https://github.com/RequestNetwork/requestNetwork/pull/945 and https://github.com/RequestNetwork/requestNetwork/pull/943

Context

The advanced-logic layer is a stateless singleton that contains an instance of all payment networks (PN). When created (see its class), it has no knowledge of what chain(s) it will be used on. It only needs an instance of the currency manager. It has no other dependency.

Issue / Solution

It is a pain to manually update PN whenever we want them to support a new chain, especially when it could be done automatically via our smart contract artifacts. Without adding new dependencies on the advanced-logic object, this can be done from the payment-detection layer. PN should have zero knowledge of what chain(s) they support. Routing from the chain/version to the payment network should be done during the instantiation of the payment detector.

From this point:

• isValidAddress in PNs now only accepts an address (no more network parameter), this means:
  • PN supporting EVM chains then support EVM addresses (that was already the case)
  • PN can now only support one type of address, so all Near-related PN had to be split in two: one for Near mainnet and one for Near testnet, the same way we already had one for BTC and one for BTC-testnet
• PN don't accept a supportedNetworks parameter anymore. Classes that extend native-token and any-to-native still have a supportedNetworks array as they need some kind of deeper level of routing. However, those are supper specific and not supposed to change that often once they are set.
• everything Near related has been moved to its own directory in advanced-logic, like we did in payment-detection
• the advanced-logic package typing has been updated (removed any whenever possible)

Ideally, those changes should not impact the behavior of the library when used for payment detection.

[coveralls]

Coverage decreased (-0.1%) to 88.999% when pulling e57154b5a0da5ca446644ee93f98c2fed75da95d on pn-check-contract-deployed into 7055d4c13ccffc406f8539e24e92dd55efbf3da2 on master.