0.88 changelog (microsoft#37056)

* 0.88 changelog

* Update README.md

Co-authored-by: Clint Rutkas <[email protected]>

* Add installer hashes

* Fix aka.ms link for ZoomIt

* Add mention to the PTRun plugin's dll file version

* Update README.md

Co-authored-by: Kayla Cinnamon <[email protected]>

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Co-authored-by: Clint Rutkas <[email protected]>
Co-authored-by: Kayla Cinnamon <[email protected]>