service: storage monitor added (#13082)

* service: storage monitor added

Storage monitor added. It uses `notify` create to get notifications
about any changes to monitored path (which is database path).
Notifications are consumed in essential task which terminates when
available storage space drops below given threshold.

Closes: #12399

* Cargo.lock updated

* misspell

* fs events throttling added

* minor updates

* filter out non mutating events

* misspell

* ".git/.scripts/commands/fmt/fmt.sh"

* Update client/service/src/storage_monitor.rs

Co-authored-by: Anton <[email protected]>

* storage-monitor crate added

* cleanup: configuration + service builder

* storage_monitor in custom service (wip)

* copy-paste bad desc fixed

* notify removed

* storage_monitor added to node

* fix for clippy

* publish = false

* Update bin/node/cli/src/command.rs

Co-authored-by: Dmitry Markin <[email protected]>

* Apply suggestions from code review

Co-authored-by: Bastian Köcher <[email protected]>

* crate name: storage-monitor -> sc-storage-monitor

* error handling improved

* Apply suggestions from code review

Co-authored-by: Bastian Köcher <[email protected]>

* publish=false removed

Co-authored-by: command-bot <>
Co-authored-by: Anton <[email protected]>
Co-authored-by: Dmitry Markin <[email protected]>
Co-authored-by: Bastian Köcher <[email protected]>