Updated monitoring diagnostics with netCDF output and additional logging

[schlunma]

Description

This PR adds netCDF output to the diagnostic monitor/multi_datasets.py and also shows the statistics printed in the figures in the log file.

Checklist

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• 🛠 This pull request has a descriptive title
• 🛠 Code is written according to the code quality guidelines
• 🛠 Documentation is available
• 🛠 Tests run successfully
• 🛠 The list of authors is up to date
• 🛠 Any changed dependencies have been added or removed correctly
• 🛠 All checks below this pull request were successful

New or updated recipe/diagnostic

• 🧪 Recipe runs successfully
• 🧪 Recipe is well documented
• 🧪 Figure(s) and data look as expected from literature
• 🛠 Provenance information has been added

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[schlunma]

@esmvalbot please run monitor/recipe_monitor_with_refs.yml

[esmvalbot]

Since @schlunma asked, ESMValBot will run recipe monitor/recipe_monitor_with_refs.yml as soon as possible, output will be generated here

[esmvalbot]

ESMValBot is sorry to report it failed to run recipe monitor/recipe_monitor_with_refs.yml: exit is 1, output has been generated here

[valeriupredoi]

ESMValBot is sorry to report it failed to run recipe monitor/recipe_monitor_with_refs.yml: exit is 1, output has been generated here

missing data for native6 - don't think that ever existed on the bot's space, @remi-kazeroni correct me if I'm wrong, bud

[valeriupredoi]

code looks good (although I'd use a different key than n for a string hehe) and Codacy warnings are benign - technical approval here, man 👍

[Paulinebonnet111]

The diagnostic script works as expected ! Thanks !