Fix various compilation errors for no-std in crates

[mattsse]

Describe the feature

crates that are offending cargo c --no-default-features

• ethereum-forks
• primitives
• primitives-traits
• ...

TODO

• fix by doing various fix like

#[cfg(not(feature = "std"))]
use alloc::vec::Vec;

extern crate alloc

etc

Additional context

No response