Implement local transformations from `quimb`

[mofeing]

In https://arxiv.org/abs/2002.01935, authors introduced a list of local Tensor Network transformations than simplify their contraction and path finding.

• [x] #14
• [x] #15
• [x] #16
• [x] #17
• [x] #18

[jofrevalles]

All implementations done.

[mofeing]

I think there are new transformations implemented in quimb so we have to read its source, but this can be done later.

@jofrevalles Could you add information in the docstrings of the transformations?

[jofrevalles]

@jofrevalles Could you add information in the docstrings of the transformations?

Sure! I will do this