Uniflow

What's Changed
* Polished examples by goldmermaid in 30 31 32
* Move pre-commit package to `dev.dependencies` for `poetry` by jojortz in 33
* Added PDF processing to `SelfInstructedGenFlow` by jojortz in 34

What's Changed
* Updated flows to all run through the `Client` interface by jojortz in 15
* Add HTML input capability for `DataGenTextFlow` by jojortz in 22
* Replace `print` with `logging` by jojortz in 16 20
* Unified input for all flows to be an input file. File processing is all handled within the flow now. By jojortz in 27
* Update the README by jojortz and goldmermaid in 21 24 25 28