0.10.30-alpha

Action events, pending and failed scans, scans metadata (#1305)

* Add action event system, make krr and popeye use it

* Bugfixes

* Fix jsonb passing in requests

* Set krr version to v1.7.0, remove logs, pass errors to metadata

* Set default ScanReportBlock.metadata

* Fix grade, should be a number

* generic events emitter

* class member instead of static

* Update insert_scan_meta with _v2 postfix

* Rework pubsub to be class-based

* Minor fixes & improvements

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Co-authored-by: Arik Alon <[email protected]>