3252 lfric value range example

[hiker]

I forgot about this example, I think I wanted to add it to the previous value range PR. Well, here it is as a stand-alone PR now. Adding a ValueRangeCheck example for LFRic (and minor fixes to the extraction documentation).

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.95%. Comparing base (de3eaf3) to head (0c7f9ad).
⚠️ Report is 16 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #3378   +/-   ##
=======================================
  Coverage   99.95%   99.95%           
=======================================
  Files         387      387           
  Lines       54269    54269           
=======================================
  Hits        54247    54247           
  Misses         22       22           

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[hiker]

IT passed, ready for review.

[sergisiso]

Thanks for adding the example @hiker, there is only some minor clean up to do and a question about some part of the README that I couldn't reproduce.

[hiker]

I will trigger IT later.

[hiker]

IT passed as well, ready for next review.

[sergisiso]

@hiker All comments have been adressed and the integration test pass. This is ready to merge.