Deprecate `record` for `DeterministicVariable`s

[damonbayer]

Originally posted by @damonbayer in #402 (comment)

DeterministicVariables should not have a record argument. Instead, they should take an optional name argument. If a name is supplied, the variable should always be recorded. If the name is omitted, then the variable should not be recorded.

For "composite RandomVariables containing multiple sites, each site should have an optional name argument, which determines whether the site is recorded.

[damonbayer]

This should extend to TransformedRandomVariables. They can be optionally named, and the naming should influence whether or not the transformed version of the variable is recorded.

[dylanhmorris]

We should revisit this in light of #727 and #703

• Proposal: all internal sites (deterministic or stochastic) are scoped.
• Anything returned by a RandomVariable.sample() call is recorded for numypro by that call within the RV's scope, even if the RV is deterministic.

This is consistent with our approach of treating deterministic and stochastic sites as similarly as possible.

[dylanhmorris]

Doing this in #727