ACCESS-NRI ENSO diagnostics CLIVAR porting

[flicj191]

Description

Recipe for ENSO diagnostics.
Working development in the form on notebook recipes: https://github.com/ACCESS-NRI/ACCESS-ENSO-recipes/tree/main

• Closes ENSO diagnostics lifecycle/ seasonality/ teleconnections for REF #3902
• Link to documentation:
  CLIVAR ENSO metrics
  CLIVAR wiki

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[rbeucher]

Looks good @flicj191 !!!

[flicj191]

Updating this PR to include all CLIVAR ENSO dive down levels for metrics

Changes to PR adding more diagnostics