Add git commit to the version as a suffix (#4812)

It's very common that we need to figure out the exact commit from which
the current installed triton package is compiled. Right now it will just
show a version number like `3.0.0` which isn't quite helpful.

With this commit we have

```
> pip show triton
Name: triton
Version: 3.0.0+git78e4f837
```

Author: antiagainst

python/setup.py

@@ -687,7 +687,7 @@ def get_install_requires():
 
 setup(
     name=os.environ.get("TRITON_WHEEL_NAME", "triton"),
-    version="3.0.0" + os.environ.get("TRITON_WHEEL_VERSION_SUFFIX", ""),
+    version="3.0.0" + get_git_commit_hash() + os.environ.get("TRITON_WHEEL_VERSION_SUFFIX", ""),
     author="Philippe Tillet",
     author_email="[email protected]",
     description="A language and compiler for custom Deep Learning operations",