docs: correct wiki against ModelExtras v3.1 source
docs: correct ModelExtras wiki against v3.1 source
Updated Home (markdown)
docs(neon): add vehicle neon and underglow documentation
docs(wiki): update v3.0 documentation, add Developer API and SA-MP integration
docs(wiki): remove PedFuncs from Home, add v2.1 and v3.0 to Metadata, add Backfire to ExhaustFx title, sync audio files