Add a tutorial on how to use the resource loader API to load resources

[OroArmor]

What would you like the wiki to cover?

• Adding a reloader
• Loading resource
• Using the resources

probably should also touch slightly on codecs

Why should this be added to the wiki?

Very difficult and even i forgot how to do it.

Where in the wiki should this go?

new section for resources

[anonymous123-code]

This matches the stuff planned in the data section. Is resources a better name for the category?

[lukebemish]

Given that it can include both assets and data, probably. In code at least, Mojang uses "resources" to refer to both, even though it calls the asset packs "resource packs"