Add PR artifact uploads and comments #6

Job	Run time
Test Processing	3m 4s
(windows/x64) Create Processing Build	5m 38s
(macos/aarch64) Create Processing Build	4m 19s
(linux/x64) Create Processing Build	4m 23s
(macos/x64) Create Processing Build	4m 35s
(linux/aarch64) Create Processing Build	3m 13s
	25m 12s

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