Add ip bloom metrics

[StephenButtolph]

Why this should be merged

Adds observability into the efficiency of the new IP bloom tracking.

How this works

Adds various metrics.

How this was tested

• Fuji:

# HELP avalanche_network_validator_ips Number of known validator IPs
# TYPE avalanche_network_validator_ips gauge
avalanche_network_validator_ips 305
# HELP avalanche_network_gossipable_ips Number of IPs this node is willing to gossip
# TYPE avalanche_network_gossipable_ips gauge
avalanche_network_gossipable_ips 280
# HELP avalanche_network_ip_bloom_count Number of IP entries added to the bloom
# TYPE avalanche_network_ip_bloom_count gauge
avalanche_network_ip_bloom_count 305
# HELP avalanche_network_ip_bloom_entries Number of entry slots in the IP bloom
# TYPE avalanche_network_ip_bloom_entries gauge
avalanche_network_ip_bloom_entries 2247
# HELP avalanche_network_ip_bloom_hashes Number of hashes in the IP bloom
# TYPE avalanche_network_ip_bloom_hashes gauge
avalanche_network_ip_bloom_hashes 10
# HELP avalanche_network_ip_bloom_max_count Maximum number of IP entries that can be added to the bloom before resetting
# TYPE avalanche_network_ip_bloom_max_count gauge
avalanche_network_ip_bloom_max_count 1792
# HELP avalanche_network_ip_bloom_reset_count Number times the IP bloom has been reset
# TYPE avalanche_network_ip_bloom_reset_count counter
avalanche_network_ip_bloom_reset_count 4

with:

# HELP avalanche_network_peers Number of network peers
# TYPE avalanche_network_peers gauge
avalanche_network_peers 280