[Utility] Be more consistent about what space functions work for what arguments

[lkdvos]

Here I'm just being slightly more careful about defining physicalspace, left_virtualspace and right_virtualspace both with a coordinate and without, which was already partially implemented for some things and not for others and kept confusing me.

[codecov]

Codecov Report

❌ Patch coverage is 75.00000% with 4 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
src/operators/abstractmpo.jl	50.00%	2 Missing ⚠️
src/states/abstractmps.jl	66.66%	1 Missing ⚠️
src/states/quasiparticle_state.jl	80.00%	1 Missing ⚠️

Files with missing lines	Coverage Δ
src/states/multilinemps.jl	74.50% <100.00%> (+2.50%)	⬆️
src/states/windowmps.jl	70.00% <100.00%> (+0.86%)	⬆️
src/states/abstractmps.jl	63.63% <66.66%> (+1.73%)	⬆️
src/states/quasiparticle_state.jl	87.10% <80.00%> (+0.65%)	⬆️
src/operators/abstractmpo.jl	86.02% <50.00%> (+0.10%)	⬆️

... and 4 files with indirect coverage changes

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[VictorVanthilt]

Some of the new code isn't covered in the tests, if you care then you could also cover them in the tests. If not i'm fine with merging

[lkdvos]

I really love how you phrased this ❤️

[VictorVanthilt]

Thanks for caring!