replace lazy_static! macro with once_cell::sync::Lazy

[elpiel]

Replace in the following crates:

• Adapter - Ethereum adapter & test_utils Validator test harness - running sentry servers #437
• Primitives (prep_db.rs, chain.rs) Rust 1.56 & edition 2021 - run rustfmt & clippy --fix #455
• adview-manager Replace lazy_static with once_cell #456
• Sentry Replace lazy_static with once_cell #456

Using once_cell::sync::Lazy will remove the complexity of the lazy_static! macro and improve readability as it achieves the same thing but without a macro.

Branch & PR should be against the aip-61-adex-v5.