v0.5.0

feat: add support for ebooks (#63)

* feat(documents): add support to convert pdf files to epub

* refactor(documents): refactor the conversion from pdf to docx

* ci(actions): install calibre on ci

* refactor(documents): refactor the conversion from pdf to image so it does not leave remaining files in the tmp directory longer than needed

* build(docker): install calibre in the image

* feat(ebooks): add support for ebooks specially epub

* feat(ebooks): add epub to mobi

* feat(ebooks): add support for mobi to epub

* feat(ebooks): add support for mobi to pdf

* feat(documents): add support for pdf to mobi

* refactor(files): refactor the methods that call the ebook-converter binary by creating a new fuctions

* refactor(csv): add small changes to the csv file

* docs(main): add more doc comments to the main file

* docs(readme): add matrices to show the new file formats supported