DiffEqBase v6.190.1

Diff since v6.190.0

Merged pull requests:

• Document initializealg keyword argument in solve docstring (#1213) (@ChrisRackauckas-Claude)
• Add comprehensive docstrings for all DAE initialization algorithms (#1214) (@ChrisRackauckas-Claude)
• Add extended initialization algorithms from OrdinaryDiffEq (#1215) (@ChrisRackauckas-Claude)