fix: add global setErrorHandler and harden getLiveUsercount against ClickHouse failures#1002

calebcgates wants to merge 2 commits into

rybbit-io:masterrybbit-io/rybbit:masterfrom

calebcgates:fix/server-add-setErrorHandler-and-handler-hardeningcalebcgates/16-pr-rybbit:fix/server-add-setErrorHandler-and-handler-hardeningCopy head branch name to clipboard