InputSource, replaces #558 #154

Job	Run time
Calculate job matrix	8s
CasePreserving__Dev__Win64 / build	12m 45s
CasePreserving__Debug__Win64 / build	12m 42s
CasePreserving__Test__Win64 / build	13m 29s
CasePreserving__Shipping__Win64 / build	18m 39s
Game__Debug__Win64 / build	13m 41s
Game__Dev__Win64 / build	13m 16s
Game__Shipping__Win64 / build	18m 29s
Game__Test__Win64 / build	11m 15s
LessEqual421__Debug__Win64 / build	13m 9s
LessEqual421__Dev__Win64 / build	14m 12s
LessEqual421__Shipping__Win64 / build	18m 36s
LessEqual421__Test__Win64 / build	13m 28s
report-artifacts	3s
	2h 53m 52s

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