Werk #15148: Graph IO flow added for ingress and egress metrics

Component	Metrics system
Title	Graph IO flow added for ingress and egress metrics
Date	Feb 22, 2023
Level	Trivial Change
Class	New Feature
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.3.0b1 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT 2.2.0b1 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT

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