WASM: add convenience methods to `PublicAddress` to work with hex #2541

Job	Run time
Lint Rust	2m 0s
Check Rust	6m 58s
Vet Dependencies	2m 57s
Test ironfish-rust (1/2)	6m 16s
Test ironfish-rust (all features) (1/2)	2m 58s
Test ironfish-rust (2/2)	5m 40s
Test ironfish-rust (no default features) (1/2)	44s
Test ironfish-rust (all features) (2/2)	2m 49s
Test ironfish-rust (no default features) (2/2)	40s
Test ironfish-zkp	44s
Test ironfish-rust-wasm	1m 18s
	33m 4s

Provide feedback