[EVM] Neuron precompile

[gztensor]

Provide the neuron functionality via precompiles.

• Precompile name: subnets
• Methods:
  • burned_register: Allows to register a neuron by calling do_burned_registration internally with the origin set to ss58 mirror of the H160 address to allow the H160 to further call neuron-related methods and receive emissions.
• E2E Tests:
  • Neuron is registered
  • ss58 mirror is the neuron owner
  • Mining emissions are paid to the H160 address

[keithtensor]

Done in #1110.