Update crypto modules to take crypto traits impl instead of peripherals

[AnthonyGrondin]

Support for Hardware crypto was added in:

• feat(bignum): Add initial bignum hardware acceleration #20
• Feat/hw accelerated sha updated #46
• feat(bignum): Add initial hardware acceleration for modular exponentiation #24

That being said, the implementation is very primitive, as it takes directly the hardware peripherals from esp-hal. We should instead refactor to take https://github.com/RustCrypto/traits, allowing us to provide a software implementation, or hardware implementation. Basically anything that implements those traits, allowing more flexibility. Most importantly, this would remove the hard dependency on esp-hal, making updates and maintainability easier.