[Docs] README link to Doxygen

[Typo] Minor typo fixes in Makefile and Book

[Docs] Apendix + Citations

[Docs] Project structure

[Fix] Books not properly updating on add

[Docs] Documentation technologies

[Docs][Typo] Doxygen link + Typos

[Docs] Library class docstrings

[Docs] Missing find book instructions from usage

[Docs] Code realization documentation

[Docs] Project requirements

[Docs] Title page + Setup docs modification

[Docs] Project usage documentation

[Fix] Exception compilation error on macOS

[Docs] Codebase setup instructions