Randomized algorithms are not compatible with tensor network decomposition

Randomized algorithms require sampling through tensor networks which is, in general, not currently available. According to the ITensorNetworks team this should be possible using their code in the near future.

Review the issue's description of sampling through tensor networks and investigate the ITensorNetworks team's referenced code for the planned capability. Determine how randomized algorithms should use tensor-network sampling, then define completion as working support for those algorithms; the issue names no files or tests.

Written by the indexing model from the issue text.