[iota-data-ingestion]: support ranged ingestion for all worker types

Currently, support for ranged ingestion (via `start-checkpoint` and `end-checkpoint`) is limited to the `Task::BigTableKv` implementation. While the `YAML` configuration already accepts these global parameters, the ingestion pipeline does not enforce them across other task types.

Refactor the entry point (`main.rs`) to standardize checkpoint range handling, ensuring that `start-checkpoint` and `end-checkpoint` are respected by all ingestion tasks.