qualify json_table columns

[jycor]

Likely due to improved aliasing code, it's simple to qualify columns for json_table.
This PR

1. adds skipped tests for currently unsupported functionality for json_tables
   • for ordinality
   • nested paths
   • default
   • error
2. adds prepared tests for existing json table script and query tests
3. reorganizes json tests

MySQL docs for missing functionality: https://dev.mysql.com/doc/refman/8.0/en/json-table-functions.html

Fix for: dolthub/dolt#6004

[timsehn]

adds skipped tests for currently unsupported functionality for json_tables
for ordinality
nested paths
default
error

How hard would it be to implement these instead of just skipping them? Seems like customers are going to be back for this.

[jycor]

adds skipped tests for currently unsupported functionality for json_tables
for ordinality
nested paths
default
error

How hard would it be to implement these instead of just skipping them? Seems like customers are going to be back for this.

That's a good point. Some of these like for ordinality look pretty straightforward, so maybe a couple days.
However, we don't even support parsing any of these keywords, so I think support for it should be in a separate PR.

[max-hoffman]

LGTM. My one reaching ask would be to try adding adding experimental versions for some of these engine tests, see if it runs, if there is any low hanging fruit to replicate on new name res path

func TestJSONTableScripts_Experimental(t *testing.T) {
	enginetest.TestJSONTableScripts(t, enginetest.NewMemoryHarness("simple", 1, testNumPartitions, true, nil).WithVersion(sql.VersionExperimental))
}

[timsehn]

However, we don't even support parsing any of these keywords, so I think support for it should be in a separate PR.

Agreed this should be a new PR.