[ref] Comply to latest clippy version

blockchain/clippy.toml

blockchain/lib.rs

blockchain/sync.rs

crypto/keys/ed25519.rs

crypto/lib.rs

documents/blockchain/v10/documents/block.rs

documents/blockchain/v10/documents/transaction.rs

documents/lib.rs

network/network_endpoint.rs

network/network_head.rs

network/network_head_v2.rs

ws2p-v1-legacy/datas.rs

ws2p-v1-legacy/lib.rs