Improve support for unobfuscated games

[Player3324]

Loader will now check if there are any mappings present to determine whether the game is obfuscated.

Namespace choices

All checks are evaluated top to bottom, first match wins. All have superseding system property and game provider overrides.

Game

no mappings -> official (game is not obfuscated)
dev flag set -> named
mappings with official namespace -> official
client -> clientOfficial
OTHER -> serverOfficial

Runtime

no mappings -> official (game is not obfuscated, stay within that)
dev flag set -> named
OTHER -> intermediary

Default mod distribution

runtime ns is official -> official (game is not obfuscated, stay within that)
OTHER -> intermediary

The application of any remapping is controlled by namespace changes and mapping presence.