Expose create_checkpoint_for

# Description
It would be useful if [create_checkpoint_for](https://github.com/delta-io/delta-rs/blob/eb19271ac78a50bd524512d5198f197c17031ad5/rust/src/action/checkpoints.rs#L112) was exposed.

**Use Case**
I want to create checkpoint in the background, but DeltaTable doesn't support Copy/Clone trait. So I am using cloned DeltaTableState and DeltaObjectStore.

**Related Issue(s)**
