fix(schematics): add support for SimplElementNgModule imports and upd… #830

Job	Run time
build-and-test / build	3m 57s
build-and-test / aot	3m 6s
build-and-test / test	4m 17s
build-and-test / e2e (2, 2)	6m 51s
build-and-test / e2e (1, 2)	6m 33s
build-and-test / coverage	11s
build-and-test / documentation	3m 53s
build-and-test / e2e-merge-reports	15s
build-and-test / preview	-1s
publish-documentation	50s
	29m 52s

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