Unify newline at end, and set insert_final_newline #2978

Job	Run time
find-duplicate-workflows	9s
clang-tidy	0s
read-build-matrix	7s
build-and-test (dpcpp, 61e51015, 20.04, intel, Debug)	7m 42s
build-and-test (dpcpp, latest, 22.04, intel, Debug)	9m 0s
build-and-test (dpcpp, latest, 22.04, intel, Release)	9m 28s
build-and-test (hipsycl, d2bd9fc7, 20.04, nvidia, Debug)	12m 23s
build-and-test (hipsycl, d2bd9fc7, 22.04, nvidia, Debug)	13m 12s
build-and-test (hipsycl, d2bd9fc7, 22.04, nvidia, Release)	17m 44s
build-and-test (hipsycl, latest, 23.04, nvidia, Debug)	13m 33s
build-and-test (hipsycl, latest, 23.04, nvidia, Release)	14m 49s
report	17s
tag-latest-containers	0s
	1h 38m 24s

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