feat: conditional VAE (#1157) #305

Job	Run time
downgrade	0s
test (1, ubuntu-latest, conv, default, true)	32m 25s
test (1, ubuntu-latest, dense, default, true)	20m 46s
test (1, ubuntu-latest, normalization, default, true)	1h 12m 53s
test (1, ubuntu-latest, misc, default, true)	41m 48s
test (1, ubuntu-latest, dense, default, false)	18m 24s
test (1, ubuntu-latest, misc, default, false)	34m 34s
test (1, macos-latest, all, default, true)	4h 37m 32s
test (1, windows-latest, all, default, true)	1h 54m 34s
	10h 12m 56s

Provide feedback