Try to compat JuliaSyntax v1.0

[hz-xiaxz]

Disclaimer: I'm in no way familiar with JuliaSyntax, just play with Gemini and try to make it not error.
related to #901 #928
No error on the kinds part now, I fixed the lost API of core_@cmd (macro is now parsed to a tree), false (this is Bool now), cartesian_iteration (maybe it's iteraction now? JuliaLang/JuliaSyntax.jl#432)

changed deprecated has_children to !is_leaf.

I would admit I don't fully understand the change, but I hope it would be a good starting point?

[hz-xiaxz]

tons of test not passed, I can't fix it myself.
For a cleaner diff, maybe revert the a218a99 locally?

[hz-xiaxz]

Also I hadn't edited the pretty.jl in YAS and SciML, so they are supposed to error..

[domluna]

the main problem with v1 is that it's changed how operators are treated. they are now all identifiers. the formatter relied heavily on them being tagged as operators and being able to determine the type of operator so a more involved solution is required that would take some time to figure out.

edit: v2 will also be tagged at some point relatively soon which might also have further breaking changes.

[oscardssmith]

It is worth getting 1.0 support as 2.0 is an intermediary in terms of what changes. Also JuliaSyntax 1.x is likely to be used by Julia 1.10-1.12 for a while. IIUC JuliaSyntax 2.0 is for Julia 1.13+ with JuliaLowering.