Suggested function: bytearray.to_hex / bytearray.from_hex

[Quantumplation]

When debugging, it'd be super helpful to be able to hex-encode a bytearray so I can pass it to trace; You might just say use cbor.diagnostic, but I prefer the hex view over cbor.diagnostic.

There may be other use cases, though not many come to mind.

[Quantumplation]

(feel free to close if you feel this is out of scope, just dropping the suggestion here while it's on my mind)

[KtorZ]

Honestly. from_hex is going to be a pain in the a** on chain, especially without bitwise primitives. Though writing an encoder may be more reasonable. Actually, so "reasonable" that we already did it 😬!

stdlib/lib/aiken/cbor.ak

Lines 212 to 237 in a467c81

	fn encode_base16(bytes: ByteArray, ix: Int, builder: ByteArray) -> ByteArray {
	if ix < 0 {
	builder
	} else {
	let byte = index_bytearray(bytes, ix)
	let msb = byte / 16
	let lsb = byte % 16
	let builder =
	cons_bytearray(
	msb + if msb < 10 {
	48
	} else {
	55
	},
	cons_bytearray(
	lsb + if lsb < 10 {
	48
	} else {
	55
	},
	builder,
	),
	)
	encode_base16(bytes, ix - 1, builder)
	}
	}

So I guess it's mainly about moving that function to the bytearray module

[rvcas]

@KtorZ I have a little example for to_hex at least