Add MERSI3 / FY3F support.

[simonrp84]

This PR adds support for the MERSI-3 instrument aboard FY-3F. There's no code changes required, as the existing MERSI-2 code can be used, so only new YAML files are added.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.95%. Comparing base (53b10be) to head (1832175).
Report is 6 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2838   +/-   ##
=======================================
  Coverage   95.95%   95.95%           
=======================================
  Files         366      366           
  Lines       53615    53615           
=======================================
  Hits        51446    51446           
  Misses       2169     2169           

Flag	Coverage Δ
behaviourtests	4.04% <ø> (ø)
unittests	96.05% <ø> (ø)

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[yukaribbba]

You forgot to change the filetype name from mersi2 to mersi3...

[simonrp84]

You forgot to change the filetype name from mersi2 to mersi3...

Haha, well spotted - fixed now. Thanks @yukaribbba!

[coveralls]

Pull Request Test Coverage Report for Build 10002879545

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 96.054%

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Totals
Change from base Build 9988332527:	0.0%
Covered Lines:	51675
Relevant Lines:	53798

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💛 - Coveralls

[mraspaud]

LGTM, is this ready to merge?

[mraspaud]

Ah, I see it is ready, merging