Vehicle asset data pull request

[Kopfstroh]

I decided to document all the Vehicle .dat options I could find. I'm not sure if its 100% all or if I mentioned anything obsolete or outdated. It might make sense to split this into several files and have it have its own folder with all the properties seperately.

Areas that I didn't know enough about, so maybe you could add some information: Trains (specifically the offset options), Shared_Skin_Name, SqrDelta, Stamina_Boost

English is not my first language, so it may have some spelling mistakes or grammatical/punctuation mistakes.

[CLAassistant]

All committers have signed the CLA.

[MoltonMontro]

As per the status checks on this PR, your pull request failed to build correctly on the documentation site (due to 4 warnings that need to be corrected). I've copy-pasted the relevant part of the errors below:

/home/docs/checkouts/readthedocs.org/user_builds/unturned/checkouts/282/assets/vehicle-assets.rst:5: WARNING: Title underline too short.

Vehicle Asset Properties
---------------------
/home/docs/checkouts/readthedocs.org/user_builds/unturned/checkouts/282/assets/vehicle-assets.rst:175: WARNING: Title underline too short.

Miscellanious Properties
---------------------
/home/docs/checkouts/readthedocs.org/user_builds/unturned/checkouts/282/assets/vehicle-assets.rst:175: WARNING: Title underline too short.

Miscellanious Properties
---------------------
looking for now-outdated files... none found
pickling environment... done
checking consistency... /home/docs/checkouts/readthedocs.org/user_builds/unturned/checkouts/282/assets/vehicle-assets.rst: WARNING: document isn't included in any toctree

• Can you rename the file to vehicle-asset.rst instead of vehicle-assets.rst? This would be more in line with the naming of other asset docs.
• 3 warnings are syntax issues. Please fix the title underline length. Title underlines should at least be the same length as the title. (It cannot be less.)
• 1 warning is a missing document. All documents must be included in the Table of Contents. Please add the document to index.rst in root.
• I've noticed a couple typos. E.g. Miscellanious → Miscellaneous, wether → whether, and Maxiumum → Maximum.

[Kopfstroh]

I added the assets/vehicle-asset above assets/vehicle-physics-profile-asset just like it is in the alphabetical order in the asset folder, do I need some kind of special permissions to make changes to index.rst?

[MoltonMontro]

Thank you for updating the PR per my requests. It looks like the current version builds correctly.

[MoltonMontro]

@SDGNelson I think the current version of this PR by Kopfstroh is fine to merge if you don't have any concerns with it. The documentation is incomplete, but a disclaimer can just be added to the top and/or it can just be finished in a separate PR.

[SDGNelson]

First of all, thanks for the contribution! Unfortunately I think Molt or I should finalize it before merging because there might be some inaccuracies, for example Train_Car_Length is actually how far apart the train cars are spaced on the tracks. For the most part it seems to be accurate though!

[MoltonMontro]

Replying here to note that I'll go through this to double-check the info / I am already going through this.

[SDGNelson]

Closing now that vehicle docs have been merged (#284)