Need to update project name

[alamb]

We got some feedback from the ASF board from our report:

• March 2025 ASF Board Report (March 12) datafusion#13713

TLDR is we need to

1. Insert a "for" in the product name everywhere it is used ("DataFusion Ray" --> "DataFusion for Ray")
2. There is no need to change the repo name,

[alamb]

fyi @andygrove and @robtandy

[robtandy]

@alamb No problem; I can do this.

What about pypi packages? Currently those are datafusion-ray and the module it produces is datafusion_ray

[alamb]

I think the intent is to make it clear this is not some part of Ray and that we don't own the trademark. In places where it is clear from the context (like package names)

Thus I don't think we need to change the package names / module names

It is similar to the fact we the crate is named datafusion but the project's official name is Apache DataFusion (to make it clear it is not some other project)

So just changing "DataFusion Ray" to "Apache DataFusion for Ray" in the documentation and the project description I think would avoid the confusion