[triton][beta] Backport 'Use variadic argument pre-compiled cuda launcher (#6788)'

Summary:
This is a backport of an upstream PR: triton-lang/triton#6788

Upstream commit message:
```
> Use variadic argument pre-compiled cuda launcher (#6788)

> * create new variadic launcher in driver.c
> * remove C string / string substitution logic to create a cuda kernel
> from driver.py
> * add logic to parse arguments & remove constexpr / flatten tuples in
> the new launcher

> The launch overhead using the scripts in comments below show no
> regressions.
```

***Do not remove the following line from this commit***
Reactor Backport Revision: d2b3925
---

This diff was generated by running:
```
buck run fbcode//triton/tools/reactor:reactor -- backport --pr 6788
```

Differential Revision: D103454938

Author: tissue3