Multi-node/hybrid support with Dagger.jl

**Describe the feature you'd like**
Use [Dagger.jl](https://juliaparallel.org/Dagger.jl/stable/) to provide multi-node and/or hybrid (multi-thread on multiple nodes) parallelism for large batches of tasks.

**How would this feature be used? Please describe.**
Users would add Dagger workers (using their local HPC cluster or some cloud resource) and use the Dagger scheduler to handle partitioning batch items among them.

**Describe alternatives you've considered**
For multi-node support, Julia's builtin `Distributed` stdlib would be an option. `Dagger.jl` provides a graph-based scheduler and the ability to tag resources needed (for example, GPUs) which are a bit more sophisticated.

**Additional context**
A Julia package extension would be a natural way to add support for this.