Update build-acceleration.md to include non SDK project reference

[davepcallan]

Update to include reference to build acceleration being available for non sdk-projects from 17.8

Microsoft Reviewers: Open in CodeFlow

[drewnoakes]

Thanks @davepcallan! You're right that we should cover this topic in the doc.

My concern is that the implementations differ somewhat between project systems, and so some of the rest of the document does not apply to non-SDK-style projects. I think that instead we can add a new section talking about non-SDK-style projects.

Pinging @jacdavis for input on what that content should be.

[davepcallan]

Thanks @davepcallan! You're right that we should cover this topic in the doc.

My concern is that the implementations differ somewhat between project systems, and so some of the rest of the document does not apply to non-SDK-style projects. I think that instead we can add a new section talking about non-SDK-style projects.

Pinging @jacdavis for input on what that content should be.

Thanks Drew, ah right, it's make sense if the both differ slightly to add a dedicated section for the non-SDK implementation. Close this PR if you like.

[drewnoakes]

Pinging @jacdavis for guidance on what content we should include here. I'm happy to help with the writing, just need the bullet points.