Tests

[WIP] Rewrite based on `NamedDimsArrays.jl`/`ITensorBase.jl` #18

Job	Run time
Tests (1, macOS-latest) / Julia 1 - macOS-latest	3m 23s
Tests (1, ubuntu-latest) / Julia 1 - ubuntu-latest	3m 33s
Tests (1, windows-latest) / Julia 1 - windows-latest	4m 33s
Tests (lts, macOS-latest) / Julia lts - macOS-latest	40s
Tests (lts, ubuntu-latest) / Julia lts - ubuntu-latest	44s
Tests (lts, windows-latest) / Julia lts - windows-latest	1m 21s
	14m 14s

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