[k8s] Define semantic conventions for k8s node condition metric

[ChrsMark]

Propose new conventions

Area(s)

area:k8s

Is your change request related to a problem? Please describe.

As part of the K8s SemConv stability work we need to define k8s node resource condition metric that is already in use by the Opentelemetry Collector.

Related to #1032

Describe the solution you'd like

The existing metrics in use that we need to define as semantic conventions are the following:

k8s.node.condition

ref: https://github.com/open-telemetry/opentelemetry-collector-contrib/blob/v0.111.0/receiver/k8sclusterreceiver/documentation.md#k8snodecondition

Similar PR: #1668