Support VLM in chat completion (+some specs updates) #6616

Job	Run time
build-windows (3.8)	4m 46s
build-ubuntu (3.8, Repository only)	1m 44s
build-ubuntu (3.8, Everything else)	2m 59s
build-ubuntu (3.8, torch_1.11)	6m 15s
build-ubuntu (3.8, torch_latest)	57s
build-ubuntu (3.11, Repository only)	1m 47s
build-ubuntu (3.11, Everything else)	3m 25s
build-ubuntu (3.11, torch_1.11)	3m 53s
build-ubuntu (3.11, torch_latest)	1m 50s
build-ubuntu (3.11, lfs)	49s
build-ubuntu (3.8, fastai)	6m 3s
build-ubuntu (3.10, fastai)	1m 6s
build-ubuntu (3.8, tensorflow)	1m 23s
build-ubuntu (3.10, tensorflow)	56s
	37m 53s

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