Prep 4.8.0 beta00017 (#795)

* add release notes

* add changes

* more references to new beta

* more website changes for new beta

* Update supported .NET versions

* WIP on adding release notes, through #854 on 2023-05-16

* Finish updating changelog for beta 17

* Remove empty bullet

* Revert "more website changes for new beta"

This reverts commit 81bc9f4.

* Revert "more references to new beta"

This reverts commit 305a7d4.

* Revert "Update supported .NET versions"

This reverts commit f29a15e.

* Revert "add changes"

This reverts commit ea4f414.

* Release notes for 4.8.0-beta00017: Updated summary, added categories for New Features and Website and Docs to better organize the issues.

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Co-authored-by: Paul Irwin <[email protected]>
Co-authored-by: Shad Storhaug <[email protected]>