perf(core)!: optimise interop with crypto wasm

[0x009922]

• Use Rc inside PublicKey and PrivateKey to make cloning cheaper
• Remove BytesJs, duplicate methods for bytes input and hex input (e.g. from_raw and from_raw_hex). Experiments showed this is faster.
• Remove duplicate _hex getters (e.g. leave only payload, remove payload_hex). Experiments showed that getting data always as bytes and then optionally "hexing" it is faster than getting hex and then optionally "dehexing" it.

Misc:

• Breaking: remove VerifyResult from Signature.verify(); just throw plain errors.

Closes #241

Benchmarks are confusing. Depending on the order of benches in the file, prev or next could be faster. In other words, this PR doesn't bring a noticeable change. But the source code on the Rust side is clearer now and maybe it will indeed work faster in some cases.

    CPU | AMD Ryzen 9 7950X 16-Core Processor
Runtime | Deno 2.2.3 (x86_64-unknown-linux-gnu)

file:///home/quacumque/Projects/iroha-javascript/packages/core/crypto/crypto.bench.ts

benchmark           time/iter (avg)        iter/s      (min … max)           p75      p99     p995
------------------- ----------------------------- --------------------- --------------------------

group hash
from hex                   771.1 ns     1,297,000 (587.3 ns …   4.2 µs) 779.2 ns   4.2 µs   4.2 µs
from hex (prev)              2.7 µs       368,300 (660.9 ns …  20.4 µs) 857.7 ns  20.4 µs  20.4 µs
from array                 953.6 ns     1,049,000 (767.2 ns …   2.2 µs) 922.0 ns   2.2 µs   2.2 µs
from array (prev)            8.3 µs       120,500 (787.5 ns … 112.2 µs)   1.0 µs 112.2 µs 112.2 µs

summary
  from hex
     1.24x faster than from array
     3.52x faster than from hex (prev)
    10.76x faster than from array (prev)

group kp-copy
new                         19.8 ms          50.6 (  2.4 ms …  52.4 ms)  31.6 ms  52.4 ms  52.4 ms
prev                        16.8 ms          59.5 (  2.5 ms … 217.8 ms)   5.2 ms 217.8 ms 217.8 ms

summary
  prev
     1.18x faster than new

group sign
new                        392.2 µs         2,550 (369.7 µs …   3.3 ms) 383.0 µs 941.9 µs   1.0 ms
prev                       384.0 µs         2,604 (368.4 µs …   1.2 ms) 380.1 µs 554.2 µs 904.2 µs

summary
  prev
     1.02x faster than new