Move the produced temporary generated files to a unique temp folder

[anutosh491]

Fixes the problem of exposing generated binaries as per pointed out here : https://discourse.llvm.org/t/mlir-python-bindings-entirely-in-the-browser/87013/4?u=anutosh491

We recently fixes it for clang-repl : llvm/llvm-project#175508 (comment)

[makslevental]

Hmm I'm not sure why actions aren't running - lemme figure it out then we can merge (even though there aren't really "tests" for this path...)

[anutosh491]

lemme figure it out then we can merge

Thank you.

Can just build it all and can query into Jupyterlite's filesystem and the generated binaries shouldn't be exposed no more and be present in a unique path.

[makslevental]

lemme figure it out then we can merge

Thank you.

Can just build it all and can query into Jupyterlite's filesystem and the generated binaries shouldn't be exposed no more and be present in a unique path.

Sure but I'm still not gonna merge without tests passing

[anutosh491]

Yess offcourse no rush ;~)