Better Package Style layout

[jorgepiloto]

Resolves #62 and partially addresses #64.

[akaszynski]

This is way better already. Agree that we don't need a separate page per topic.

[jorgepiloto]

I decide to add Graphviz diagrams. These turned out to be really useful and more informative than the tree-based ones. In addition, taking advantage of the .. include:: directive, it is possible to store these diagrams in a common directory.

Notice these diagrams follow RST syntax and are rendered when executing Sphinx.

[akaszynski]

I decide to add Graphviz diagrams.

This is great and maintainable!

[jorgepiloto]

Graphviz is a little bit tricky when it comes to linking subgraphs. Nevertheless, I managed to solve this locally. The build-system diagram is going to look really cool! 🚀

[jorgepiloto]

Adding here some useful references:

• https://docs.typo3.org/m/typo3/docs-how-to-document/main/en-us/WritingReST/Graphs.html
• https://stackoverflow.com/questions/2012036/graphviz-how-to-connect-subgraphs

[akaszynski]

Adding here some useful references:

About to add "api docs" and I'll need this.

[PipKat]

@jorgepiloto @akaszynski
I have completed my editorial review.

[jorgepiloto]

I think figure captions need to end with a period. Will modify the rest accordingly.

[jorgepiloto]

Thanks for such a deep review @PipKat! I applied all the suggested changes 👍🏽

[jorgepiloto]

Finally, merging this 🚀