Add support for the normalize option to all MET tools that use climatology data.

[JohnHalleyGotway]

Describe the Enhancement

#1918 added the normalize option to the gen_ens_prod tool. That enables the ensemble member fields to be normalized relative to the external climatology or to the ensemble mean and standard deviation.

This issue is to extend that support more broadly to all of the MET tools that support the use of external climatology data. And those tools are Point-Stat, Grid-Stat, Ensemble-Stat, and Series-Analysis. For each of these tools, in addition to processing the raw input data, they should be able to process the anomaly (subtract mean) or standardized anomaly (subtract mean and divide by standard deviation).

When adding this support, be sure that both the gridded forecasts, gridded analyses, and point analyses can be normalized... depending on the scope where the normalize option is specified in the config file.

For Point-Stat and Grid-Stat, only normalizing relative to an external climatology can be supported.
For Ensemble-Stat and Series-Analysis, in addition to the external climatology, we could also normalize relative to forecast mean and standard deviation, as is done in Gen-Ens-Prod.

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