[BUG] import RegularSynthesizer does not work in with ydata-synthetic version 2.0.0

[ednaruiz]

Describe the bug

RegualSynthesizer does not seem to exist anymore in the latest release

To Reproduce
Steps to reproduce the behavior:

1. Install ydata-synthetic throug pip
2. Try to export: from ydata_synthetic.synthesizers.regular import RegularSynthesizer (note this is the export indicated in the notebooks of the example directory
3. See error:

>>> from ydata_synthetic.synthesizers.regular import RegularSynthesizer
<stdin>:1: DeprecationWarning: `import ydata_synthetic.synthesizers` is deprecated. Please use `import ydata.sdk.synthesizers` instead.For more information check https://docs.synthetic.ydata.ai/latest and https://docs.fabric.ydata.ai/latest/sdk
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: cannot import name 'RegularSynthesizer' from 'ydata_synthetic.synthesizers.regular'

Desktop (please complete the following information):

• OS: google Colab
• python 3.9

Additional context
A quick look at the available classes provides:

>>> import ydata_synthetic.synthesizers.regular as reg
>>> print(dir(reg))
['__builtins__', '__cached__', '__doc__', '__file__', '__loader__', '__name__', '__package__', '__path__', '__spec__', 'cgan', 'cramergan', 'ctgan', 'cwgangp', 'dragan', 'gmm', 'vanillagan', 'warn', 'wgan', 'wgangp']