Operation request: Parity bit

[NilsIrl]

Summary

https://en.wikipedia.org/wiki/Parity_bit

There should be an option to encode and decode and choose odd or even number of 1 bits.

Examples

Decode odd:

10101000 00101001 -> 00101000 00101001

Encode odd:

00101000 00101001 -> 10101000 00101001

Decode even:

00101000 10101001 -> 00101000 00101001

Encode even:

00101000 00101001 -> 00101000 10101001

[NilsIrl]

Depending on how it is done and if error should be outputted if the input doesn't have parity.

Decode (even || odd) can be implemented as AND({'option':'Binary','string':'01111111'})

[GCHQDeveloper581]

Resolved by merge of #1036