[Fix]: wrapped unified classes with @dataclass

[Feat]Added the dataclasses functionality to the main unified classes.

[Feat] Add docsify.js (https://docsify.js.org/)  as documentation system

[Feat] Added the dataclasses functionality to the paragraph class
[Feat] Highlighted the text alignment property in enum
[Fix] Moved auxiliary functions to Helpers

[Feat] Completely changed the algorithm for highlighting paragraphs of pdf documents, removing duplicates of tabular paragraphs, added documentations

# Conflicts:
#	src/PDF/TestPDFParser/Отчёт по практике для парсинга.pdf

[Fix] Changed the method for removing duplicates of table paragraphs so that the addition of a structural element takes place outside of it

[Fix] Fixed errors in the algorithm for removing duplicates of tabular text
[Fix] Optimized algorithms for selecting lines and paragraphs

ODT classes for objects

Small fixes after migration

Create LICENSE.md