[0035] Update PSV0 to drive all API capabilities

**Which proposal does this relate to?**
[[0035] - linalg](https://github.com/microsoft/hlsl-specs/blob/main/proposals/0035-linalg-matrix.md)

**Describe the issue or outstanding question.**
We have two in-flight PRs that require revising PSV0 (#803, and #819). This issue is to track that those updates get made.
