* Use BLS keys for operator keys
* Add "bls generate" RPC to generate BLS keys
* Use unique_ptr to store blsKeyOperator and blsPubKeyOperator
Needed because the Chia BLS library crashes when keys are created before
the library is initialized, even if keys are not used. This is the case here
as we have static instances here.
* Remove unnecessary CheckSignature calls
This seems to be some garbage I left in by mistake.
* Fixed review comments
* Fix rpc help for operator keys
All keys that are used as examples are random. None of the secret keys
belongs to any of the public keys.
* Use .GetHash() instead of ::SerializeHash() for BLS pubkeys in txmempool.cpp
* Rename mapProTxBlsPubKeys to mapProTxBlsPubKeyHashes
* Implement dip3 integration tests
This tests the full upgrade path from legacy MNs to deterministic MNs
* Invoke UpdatedBlockTip signal when invalidateblock RPC is called
Currently, UpdatedBlockTip would only be called if the invalidation resulted
in another chain becoming the longest one. This is inconsistent behavior
and was spotted when running dip3 integration tests.
