REST max temperature from CLI

[ijpulidos]

Currently perses REST capabilities are not being used in the small molecule pipeline from CLI. One quick way to do this is passing a configuration option from the YAML file to be used as t_max when setting up the sampler in https://github.com/choderalab/perses/blob/53c61b8bfddd6f815d2e4523af5d8c77eba030d8/perses/app/setup_relative_calculation.py#L698

This would allow sampling using REST in the small molecule pipeline, which might be something that we would like to have and experiment with in the near future.

[ijpulidos]

We should do the same validation as we do with the other parameters here https://github.com/choderalab/perses/blob/53c61b8bfddd6f815d2e4523af5d8c77eba030d8/perses/app/setup_relative_calculation.py#L1076

[zhang-ivy]

We can write a test that checks that the rest lambda values are changing (and between 0 and 1) when we use T_max != 300 K. We can do this by checking state.lambda_rest_bonds where state is one of the non-endstate thermodynamic states (i.e. a state with lambda > 0 or < 1)..