[FEATURE REQUEST] Weak contraction hierarchies or other approaches to improve contraction process

[LdDl]

Is your feature request related to a problem? Please describe.
Consider extension of current implementation with customization

Describe the solution you'd like and provide pseudocode examples if you can
Prepare new branch(-es) and do some testing stuff in it

Additional context
Links to original papers:

1. Weak contraction hierarchies https://i11www.iti.kit.edu/_media/teaching/theses/weak_ch_work-1.pdf
2. Transit node routing https://arxiv.org/pdf/1302.5611.pdf
3. Parallel Time-Dependent Contraction
   Hierarchies http://algo2.iti.kit.edu/download/vetter_sa.pdf