New Features
* export general model creation functions
* create models dinamically
* add exportable classes
* add json api documents
Fixes
* set field as Optional
* set Optional fields of Resource
Refactorings
* change some lines separation
* change project structure
* (model): add docstrings
Docs
* add installation steps
* add CHANGELOG
* add errors documentation to README
* fix grammar of README
* fix note section
* add some emojis to README
* add data model examples to READMe
* add source info link
* add docstring
* change subtitle
* add json schemas
* change owner in copyright
Others
* add project build files
* change LICENSE
* add requirements file
* add vscode folder