Multiple issues addressed, added export for fmfn files

[DanShockley]

Since this projects has asked for no pull requests, I've taken the fmp12 from my fork, and am attaching it to this "Issue". My fork is at: https://github.com/DanShockley/fm-json-additions

One potentially useful thing is that the database now uses the Save As XML, along with the BaseElements plugin, to create the .fmfn files in the functions directory. So, the attached file might make pull requests more useful in the future, since the FileMaker file can at least update all the .fmfn files itself.

Note that I believe this copy addresses the following issues:

• Issue Enhancement - JSON.ArraySlice #17 - added function JSON.ArraySlice, by steveAllen0112
• Issue JSON.ArrayLength is incorrect with empty string as value #18 - fixed JSON.ArrayLength to use JSONListKeys, as suggested by rwu2359
• Issue JSON.Merge fails if the first character in a value is a quote mark #19 - merge bug with 1st char is quote - included the fix by davegraham92120
• Issue Support for deep merge #20 - deep merge - included the fix by davegraham92120
• Issue JSON.ArrayFromRelated with text values?  #23 - added function JSON.ArrayFromRelatedText, by flybynight27
• Issue JSON.Merge transforms UUIDnumbers to scientific notation #24 - added fix to UUIDNumber issue by checking length or using JSONGetElementType if FM version is >19.5.1, suggested by salgoya
• Issue Add support for shallow diff #27 - added JSON.Diff (shallow), by davegraham92120. Added fix for large-numbers-as-text
• Issue JSON.ArrayLength fails if 1st item is a string that begins with a question mark #28 - fixed by changing JSON.ArrayLength to use JSONListKeys (same as fix for JSON.ArrayLength is incorrect with empty string as value #18)
• Issue JSON.IsValid can be faked out to return False for valid JSON #29 - fixed by changing JSON.IsValid to use Claris-recommended validity test.

Additional Changes:

• Added FileMaker script "Export functions" to update/create .fmfn files to match the CURRENT custom functions in the fmp12 file by doing Save Copy as XML (requires BaseElements plugin).
• Updated all the .fmfn files.
• renamed table to "RelatedData" instead of "RleatedData"
• Updated all the test names to be consistent with the function's current name
• Updated all the test names to include a bit more description of what they test
• In fmp12 file, widened field showing the test name
• In fmp12 file, removed the passfail field from tab order

Attached file:
JSONAdditions-2023-04-21-1906.fmp12.zip

[DanShockley]

Note that the Contributing.md file asks us to apply labels to our issues, but I believe only those with triage access to the repository can apply labels to issues.
I guess this issue would be: bug, enhancement

[DanShockley]

I did not update the docs.md file, but we could probably modify the Export Functions script to also update that file. It would require some parsing of the function code pulled from the XML file, but is probably doable, especially if the functions all stick to a standard documentation block at the beginning.

[toddgeist]

Thanks for putting so much effort in. I'll take a look at your fork and see what we can do about merging it.

[DanShockley]

Glad to help! Hopefully benefits us all.
I finished adding "update the docs.md file" to the Export script. That also involved modifying a handful of the functions so they stuck to the same intro documentation block format.
Attached is an updated copy of the fmp12 file.
JSONAdditions-2023-04-22.fmp12.zip

[joshormond]

@DanShockley - Just ran into this recently. We also changed from JSONListValues to JSONListKeys, and with that change you can remove that substitution from JSON.ArrayLength also. It is no longer needed.