feat(beam): generate a HybridVisStream from telescope instance
feat(beam): generate a HybridVisStream from telescope instance

Adds a new CreateBeamStreamFromTelescope task that evaluates
the beam model in a telescope instance to construct a GridBeam
that is then passed to the CreateBeamStream superclass to convert
to HybridVisStream for use in the deconvolving ringmap maker.

radiocosmology/draco,radiocosmology/draco