Wrap tiledb_handle_load_array_schema_request

[davisp]

This wraps the new tiledb_handle_load_array_schema_request function in TileDB.

I was a bit unsure of where to put this. But based on the prior art for DeserializeLoadEnumerationsRequest, I stuck it in array_schema.go.

There's also at least one more of these coming for another handler though. So if you want me to create a new handlers.go or cloud_handlers.go or some such, I could also move the Enumeration handler and add the third all in one PR if that's preferable.

Also, I have no idea on Go style guides. I just know that this compiles. When I run go fmt locally it changes a lot of things that do not appear as they should changed so I've not run it and am just crossing my fingers I aped the DeserializeLoadEnumerationsRequest code closely enough.

[shortcut-integration]

This pull request has been linked to Shortcut Story #35285: Submit TileDB-Go PR to wrap tiledb_handle_load_array_schema_request.

[davisp]

Some of those test failures look like version incompatibilities and I can't decipher the others. I'm no Go expert so feel free to poke me with a clue stick if I've missed anything obvious.

Also, I believe this is the first ever Go PR I've ever submitted which is very exciting.

[ihnorton]

LGTM but I'll leave for @anastasop to get a second set of eyes on the Go code, and merge.

[anastasop]

@davisp the PR is OK. The tests fail because it is build against a TileDB 2.17.4 build. To eliminate the test failures you can cherry-pick the yaml commits of #279 or wait for a TileDB 2.18 release before resubmitting. No code changes are needed but cannot be merged until TileDB 2.18 is released which will lead to TileDB-Go 0.24