[clang] [lldb] [WebAssembly][Clang] Give wasm tables their own type in clang AST (PR #205817)

[Demetrius Kanios via cfe-commits]

https://github.com/QuantumSegfault commented:

Other than a couple of nit-picks, it seems fine. But again, I'm not familiar with Clang.

Though I notice the only place that `WebAssemblyTableType` element type is checked is during Sema? No other guard rails against the internals of Clang creating invalid tables (with non-reference types). Probably not an issue. Just an observation.

https://github.com/llvm/llvm-project/pull/205817