Skip json comments

[mlaily]

Closes #1215

JSON.Net supports both // and /* .... */ style comments (https://www.newtonsoft.com/json/help/html/T_Newtonsoft_Json_Linq_CommentHandling.htm), can FSharp.Data be extended to do the same?

Feel free to discuss!

One thing of note: there is no way to disallow comments in json now.
I didn't feel like it was something the user would usually want, but there might be some edge cases where it could be needed (especially since it's not standard json).
I'm not sure what would be the best way to support this option without littering the parsing methods with a boolean or something like that... (and how to keep backward compat)

Bonus:

• I fixed the tests (first commit) that were failing. Not sure if this is normal/known?
• I changed the .gitattributes to format new lines the same way .editorconfig wants them: lf for almost all file types. (I did this after having multiple problems while working in the code and having mixed CRLF and LF...)
  (These are the same changes I did in PR Implement "inline schemas": ability to add type hints into the type providers' source documents #1447. I'm thinking that it might be easier to get them accepted in this small PR, so I can remove them from the big one and make it easier to review)

[cartermp]

Test failure on windows:

The 'date' attribute is invalid - The value '2018-08-29T05:30:56.0000000' is invalid according to its datatype 'http://www.w3.org/2001/XMLSchema:date' - The string '2018-08-29T05:30:56.0000000' is not a valid Date value./n<A int="0" long="0" date="2018-08-29T05:30:56.0000000" dateTime="2022-06-09T20:33:59.5191679+00:00" boolean="false" decimal="0" double="NaN" />
Failed!  - Failed:     1, Passed:  2487, Skipped:     0, Total:  2488, Duration: 20 s - FSharp.Data.Tests.dll (net6.0)
  FSharp.Data.DesignTime.Tests -> D:\a\FSharp.Data\FSharp.Data\tests\FSharp.Data.DesignTime.Tests\bin\Release\net6.0\FSharp.Data.DesignTime.Tests.dll
Test run for D:\a\FSharp.Data\FSharp.Data\tests\FSharp.Data.DesignTime.Tests\bin\Release\net6.0\FSharp.Data.DesignTime.Tests.dll (.NETCoreApp,Version=v6.0)

[mlaily]

Hello,

After investigation, the failing test is Web request's timeout is used.

The error message you highlighted about an invalid date is output by the time is omitted when zero test upon xsd schema validation failure, even when the test passes.

I'm not sure why the Web request's timeout is used test failed. We probably should rely on external services as little as possible to avoid flaky results.

 Failed Web request's timeout is used [37 ms]
  Error Message:
   System.NullReferenceException : Object reference not set to an instance of an object.
  Stack Trace:
     at FSharp.Data.Tests.Http.Web request's timeout is used() in D:\a\FSharp.Data\FSharp.Data\tests\FSharp.Data.Tests\Http.fs:line 134

Do you think it would be possible to simply run the build again?

[cartermp]

Yeah, the tests aren't ideal. Ah well! Thanks a bunch, it looks good.

[mlaily]

Thanks a lot!