Add `insertdims` (#830) #325

Job	Run time
Julia 1.6 - ubuntu-latest - x64 - push	55s
Julia 1.6 - macOS-latest - x64 - push	1m 19s
Julia 1.6 - windows-latest - x64 - push	13m 28s
Julia 1.7 - ubuntu-latest - x64 - push	46s
Julia 1.7 - macOS-latest - x64 - push	1m 20s
Julia 1.7 - windows-latest - x64 - push	1m 3s
Julia 1.8 - ubuntu-latest - x64 - push	47s
Julia 1.8 - macOS-latest - x64 - push	1m 1s
Julia 1.8 - windows-latest - x64 - push	1m 3s
Julia 1.9 - ubuntu-latest - x64 - push	47s
Julia 1.9 - macOS-latest - x64 - push	1m 6s
Julia 1.9 - windows-latest - x64 - push	1m 6s
Julia 1.10 - ubuntu-latest - x64 - push	53s
Julia 1.10 - macOS-latest - x64 - push	1m 36s
Julia 1.10 - windows-latest - x64 - push	1m 9s
Julia ~1.11.0-0 - ubuntu-latest - x64 - push	1m 0s
Julia ~1.11.0-0 - macOS-latest - x64 - push	1m 26s
Julia ~1.11.0-0 - windows-latest - x64 - push	1m 28s
Julia nightly - ubuntu-latest - x64 - push	1m 8s
Julia nightly - macOS-latest - x64 - push	1m 19s
Julia nightly - windows-latest - x64 - push	1m 21s
	36m 1s

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