criterion: cuprate-rpc-types

[hinto-janai]

What

Adds Criterion benchmarks for cuprate-rpc-types in benches/criterion/cuprate-rpc-types.

Requires #196.

[hinto-janai]

Initial results.

benchmark	average time per call
epee_from_bytes_get_blocks_request	86.675 ns
epee_to_bytes_get_blocks_request	108.94 ns
serde_from_str_tx_entry	928.48 ns
serde_to_string_tx_entry	190.51 ns
serde_from_str_get_last_block_header_response	651.84 ns
serde_to_string_get_last_block_header_response	507.25 ns
serde_from_str_calc_pow_request	183.96 ns
serde_to_string_calc_pow_request	60.611 ns
serde_from_str_sync_info_response	1.5147 µs
serde_to_string_sync_info_response	180.23 ns
serde_from_str_get_info_response	997.70 ns
serde_to_string_get_info_response	843.08 ns
serde_from_str_get_block_response	1.7308 µs
serde_to_string_get_block_response	576.69 ns
serde_from_str_get_connections_response	1.0853 µs
serde_to_string_get_connections_response	46.413 ns
serde_from_str_get_block_template_response	469.21 ns
serde_to_string_get_block_template_response	267.68 ns
serde_from_str_get_block_headers_range_response	1.1637 µs
serde_to_string_get_block_headers_range_response	74.125 ns

[hinto-janai]

See #354.