add release for arm64 linux

[jinyuzu99]

[ofen]

@cryptonote-social hi! Do you have instruction how to build https://github.com/cryptonote-social/RandomX for arm64? I'm unable to build it on raspberry pi 3 due to gcc: error: unrecognized command-line option '-m64' error (https://github.com/cryptonote-social/csminer/blob/master/rx/rx.go#L7).

[cryptonote-social]

no i'm afraid not, I don't have any arm64 machines