app: configure atproto agent to use .place lexicons, add place.stream.live.getSegments (#182)
* xrpc: add place.stream.live.getSegments
* app: make use of place.stream.live.getSegments
* app: clean logging
* app: cleanup a bit
* app: bump @atproto to avoid having 2 lexicons embedded lol
* app: fix types post-upgrade
* fixup
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