Better Invitation Encoding

The Lox invitation endpoint currently returns a string of bytes formatted like:

 {"invite":92,149,13,240,159,9,236,1,141,15,246,61,49,4,53,142,229,56,160,137,155,86,127,166,223,8,80,114,117,17,210,3,2,0,0,0,5,36,19,41,86,145,241,114,93,58,10,118,162,141,183,53,200,168,179,108,34,222,21,15,252,195,121,92,185,187,78,126,17,67,153,113,32,87,109,232,90,104,27,162,141,83,26,121,195,47,249,109,50,104,220,136,183,111,7,8,93,53,3,12}

This is probably not ideal for a user to paste into the browser, though maybe it is fine? We should check with the ux team to see if they have suggestions for a better user experience and consider changing this (and the interface) to accept a more user-friendly invite.