Add missing methods to Async Subtensor

[thewhaleking]

Is your feature request related to a problem? Please describe.

Methods that exist in Subtensor that don't exist in AsyncSubtensor

Describe the solution you'd like

Add the following methods to AsyncSubtensor:

get_all_subnets_info
metagraph
is_hotkey_registered_on_subnet
subnetwork_n
get_neuron_for_pubkey_and_subnet
immunity_period
tempo
get_commitment
min_allowed_weights
max_weight_limit
get_prometheus_info
get_all_subnets_info
difficulty
recycle
get_delegate_take
get_delegate_by_hotkey

Describe alternatives you've considered

No response

Additional context

Differing function signatures:
is_hotkey_registered:

• AsyncSubtensor:

async def is_hotkey_registered(self, netuid: int, hotkey_ss58: str) -> bool:`

• Subtensor:

def is_hotkey_registered(
    self,
    hotkey_ss58: str,
    netuid: Optional[int] = None,
    block: Optional[int] = None,
) -> bool: