Path order determination

• Path order now determined by generating the k-path on the fly, using user-input labels if specified
• This is important because older tasks will often have a periodic image of the same high-symmetry point, and thus fail to identify a path if labels are regenerated on the fly
• The path convention can be manually set, automatic determination is only used as a fallback

Some other important notes:

• There are wild inconsistencies in the labels used for the k-paths (ex, \\Gamma, GAMMA, and Γ)
• Latimer-Munro also uses arbitrary labels per their paper:

Because each k-path is generated on-the-fly, no hard-coded labels are assigned unlike the previous conventions.

Band structure task type

• Added a SCF Line task type to handle (specifically) meta-GGA and hybrid band structure calculations
• These functionals require a different, SCF procedure to generate band-structures
• Previously, the task type of these calcs would have been identified as Static
• emmet.core.vasp.calc_types.utils.task_type function has been updated to check for (i) zero-weighted k-points and (ii) either a meta-GGA or hybrid tag to set the SCF Line task type