Janno input validation for JSON and CSV data

[nevrome]

In this PR I collect the changes for #167.

Here's some test code to check if en- and decoding to JSON works as expected:

(decode $ encode $ JannoRow {jPoseidonID = "1", jAlternativeIDs = Nothing, jRelationTo = Nothing, jRelationDegree = Nothing, jRelationType = Nothing, jRelationNote = Nothing, jCollectionID = Nothing, jSourceTissue = Nothing, jCountry = Nothing, jLocation = Nothing, jSite = Nothing, jLatitude = Nothing, jLongitude = Nothing, jDateC14Labnr = Nothing, jDateC14UncalBP = Nothing, jDateC14UncalBPErr = Nothing, jDateBCADMedian = Just $ BCADAge 191, jDateBCADStart = Nothing, jDateBCADStop = Nothing, jDateType = Just C14, jDateNote = Nothing, jNrLibraries = Nothing, jCaptureType = Just $ JannoList [Shotgun, TwistAncientDNA, A1240K], jGenotypePloidy = Just Diploid, jGroupName = JannoList {getJannoList = ["huhu"]}, jGeneticSex = JannoSex Female, jNrSNPs = Nothing, jCoverageOnTargets = Nothing, jMTHaplogroup = Nothing, jYHaplogroup = Nothing, jEndogenous = Nothing, jUDG = Nothing, jLibraryBuilt = Nothing, jDamage = Nothing, jContamination = Nothing, jContaminationErr = Nothing, jContaminationMeas = Nothing, jContaminationNote = Nothing, jGeneticSourceAccessionIDs = Nothing, jDataPreparationPipelineURL = Nothing, jPrimaryContact = Nothing, jPublication = Nothing, jComments = Nothing, jKeywords = Nothing, jAdditionalColumns = CsvNamedRecord (HM.fromList [("de", "ab"), ("gugu", "45")])}):: Maybe JannoRow

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Codecov Report

Base: 64.96% // Head: 68.59% // Increases project coverage by +3.62% :tada:

Coverage data is based on head (3d7f12e) compared to base (d8a5b96). Patch coverage: 62.33% of modified lines in pull request are covered.

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```diff @@ Coverage Diff @@ ## master #221 +/- ## ========================================== + Coverage 64.96% 68.59% +3.62% ========================================== Files 18 18 Lines 2295 2283 -12 Branches 256 258 +2 ========================================== + Hits 1491 1566 +75 + Misses 548 459 -89 - Partials 256 258 +2 ``` | [Impacted Files](https://codecov.io/gh/poseidon-framework/poseidon-hs/pull/221?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=poseidon-framework) | Coverage Δ | | |---|---|---| | [src/Poseidon/Janno.hs](https://codecov.io/gh/poseidon-framework/poseidon-hs/pull/221?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=poseidon-framework#diff-c3JjL1Bvc2VpZG9uL0phbm5vLmhz) | `80.03% <62.33%> (+14.38%)` | :arrow_up: | Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=poseidon-framework). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=poseidon-framework)

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[nevrome]

So here is what we discussed in #167. I added some tests to make sure that the en- and decoding cycles work. I hope the human-readable representation of the data in .json and .csv format is still as expected.

I thought about squeezing #225 into this PR as well, but probably it's better to split things into smaller, more digestible chunks.

[nevrome]

Yes - we have. At least for the .janno file. I'll merge this now. Let's hope it doesn't explode.