chore: disabling metrics for libwaku

[gabrielmer]

Description

When running a node using libwaku, we repeatedly get the following error

metrics error: New label values must be added from same thread as the metric was created from - observation dropped: libp2p_gossipsub_peers_per_topic_gossipsub collector
metrics error: New label values must be added from same thread as the metric was created from - observation dropped: libp2p_gossipsub_peers_per_topic_fanout collector.
metrics error: New label values must be added from same thread as the metric was created from - observation dropped: libp2p_gossipsub_peers_per_topic_mesh collector.

Disabling by default the metrics for libwaku until the root cause is taken care of

Changes

• undefining the metrics compilation flag
• modified nanosecondTime to accept the type passed when metrics are disabled
• assigning a proc to logMetrics only when metrics are defined

Issue

#3039

[github-actions]

You can find the image built from this PR at

quay.io/wakuorg/nwaku-pr:3058

Built from 517b0cf

[Ivansete-status]

LGTM! Thanks for it! 💯

[NagyZoltanPeter]

Awesome!