feat(): add dockerfile and manifest for monitoring-loki

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Comments & Concerns

This component is a repackaging of grafana/loki:2.8.2 based on distroless, so it has the same CVEs as the current image grafana/loki:2.8.2 available in IronBank repository.

We plan to upgrade to the last version 2.8.4 in the next official release, not yet planned.

StatusReview

Related to #1 (closed)