[EVM] Make metagraph data available as precompile

[gztensor]

Add a new precompile contract that will expose following state to EVM in the following methods. All methods should accept netuid as a parameter. Also, all methods except get get_netuid_count accept uid parameter.

Method	State returned
get_uid_count	SubnetworkN
get_stake	Total stake of the neuron in Tao
get_rank	Rank score of the neuron
get_trust	Trust score assigned to the neuron by other neurons
get_consensus	Consensus score of the neuron
get_incentive	Incentive score representing the neuron's incentive alignment
get_dividends	Dividends earned by the neuron
get_emission	Emission received by the neuron (with 18 decimals)
get_vtrust	Validator trust score indicating the network's trust in the neuron as a validator
get_validator_status	Validator status of the neuron
get_last_updated	Number of blocks since the neuron's last update
get_is_active	Activity status of the neuron
get_axon	Network endpoint information of the neuron
get_hotkey	Hotkey (public key as bytes32) of the neuron
get_coldkey	Coldkey (public key as bytes32) of the neuron

Acceptance Criteria:

• Precompile implemented
• ABI and sol files added
• e2e JS tests implemented for each method

[camfairchild]

We also need (either a second precompile, etc.) access to the current subnets to verify a subnet is still registered/when it deregisters.