[WIP] - Truckload of books package!

A huge project to increase the variety of books in-game and include skill books of varying levels for all of the game's skills.

There's a *lot* of new novels - more options for boosting morale and fun for collectors!

*All of the old books are still there*, and new books have been added so that all skills have *at least one of the following*:

id *mag_XXXXX* - that teaches the skill from 0-1

id *manual_XXXXX* - that teaches the skill from 0-3

After that it changes slightly, all the physical skills (driving, swimming, and all the combat skills) no longer have standardized skill books, however *the remaining skills all have at least one of*:

id *textbook_XXXXX* - that teaches the skill from 3-6

The combat and physical skill books are all fairly rare, and generally show up in military and sports type of places.

The labels *magazine, manual,* and *textbook* are ids, they do not necessarily have anything to do with the books' in-game names.

Many skills already have books that teach different skill ranges outside of the three types listed here, and adding a bunch more of them is the ongoing next step in this PR.