[WIP] Revert "Removal of XMPP support due to instability"#743

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amotl wants to merge 12 commits intomasterfrom

collab/bring-back-xmpp

Commits on Nov 3, 2022

refactor: add 'async' to async_notify(), eliminate compatibility wrappers
YoRyan
committed

Commits on Nov 4, 2022