Define a naming convention for labels and annotations we use on cluster components and workloads

[diego-ojeda-binbash]

Describe the Feature

Define a naming convention for labels and annotations we use on cluster components and workloads.
This should serve as a reference for any implementations we make.
This one https://helm.sh/docs/chart_best_practices/labels/ should be a good starting point.
Our demoapps could become the reference implementation for that.

Expected Behavior

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Use Case

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Describe Ideal Solution

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Alternatives Considered

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Additional Context

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