Bases for CholeskySpace and LogCholesky metric #3700

Job	Run time
Julia lts - test_manifolds - ubuntu-latest	27m 48s
Julia lts - test_lie_groups - ubuntu-latest	21m 11s
Julia lts - test_manifolds - macOS-latest	22m 1s
Julia lts - test_lie_groups - macOS-latest	23m 4s
Julia 1 - test_manifolds - ubuntu-latest	47m 10s
Julia 1 - test_lie_groups - ubuntu-latest	30m 39s
Julia 1 - test_manifolds - macOS-latest	40m 58s
Julia 1 - test_lie_groups - macOS-latest	24m 8s
Julia pre - test_manifolds - ubuntu-latest	52m 22s
Julia pre - test_lie_groups - ubuntu-latest	31m 38s
Julia pre - test_manifolds - macOS-latest	55m 0s
Julia pre - test_lie_groups - macOS-latest	29m 52s
	6h 45m 51s

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