Aiogram-forms

Fixed
- Fixed multiple forms issue
- Fixed mypy types to pass checks

Added
- New `ChoiceField` field with `ChoiceValidator` validator

Changed
- `FormsManager.get_data` can now accept form ID as param. Form class param marked as deprecated and will be removed in next releases.
- Completed 100% tests coverage and full types coverage (mypy)

Fixed
- Small fixes and updates for `README` example

Changed
- Added link to documentation website to `README.md`
- Move coverage config from `.coveragerc` to `pyproject.toml`
- Removed python 3.7 from supported versions and CI
- More tests added, to cover 100% of codebase

Fixed
- Fix `Development Status` PyPI classifier to be `Production/Stable`
- Fixed unhandled error during `dispatcher.show` call without any form registered

Changed
- Whole package was re-worked from scratch

Added
- Added new `PhoneNumberField` field with ability to process contact sharing
- Added utility `get_fields()` method to fetch list of form fields
- Removed `__version__` from package `__init__.py`
- Removed `EmailValidator` from validators. Please use `validators.RegexValidator(EMAIL_REGEXP)` instead
- Updated example with more details and comments
- Added some classifiers for PyPI

Added
- New `validation_error_message` option for fields to set custom error message in case of failed validation

Fixes
- Fixed label bug for `ChoicesField`
- Minor type hint fixes