feat(packages): add internal presence plugin
feat(packages): add internal presence plugin

aimeex3/spark-js-sdk,adamweeks/spark-js-sdk,aimeex3/spark-js-sdk,mwegman/spark-js-sdk,mwegman/spark-js-sdk,adamweeks/spark-js-sdk,mwegman/spark-js-sdk,aimeex3/spark-js-sdk,adamweeks/spark-js-sdk