On vanilla Minecraft you can't add Lore's to items but since emcs a "French vanilla" does it let you add Lore's to items with the anvil or something?
Well, this prevents players from faking promos. Sure, it could be made so that regular players can't use colours in their lore, but players could still easily mistake regular items for promos if they had lore.
Also... The only way to do this in vanilla is to enable 'cheat codes', it's not something which is part of the normal game play. With these sort of things it might be best to stop and ask yourself if you can do something without codes. If not then it's most likely not something which you can do on the Empire. I can understand if you're disappointed, but... there's still tons of other cool things to explore. And if you like lored items you may love EMC's promotional items. They don't merely have lore on them, they even got colored lore / stats.
There are quite some things you can do that'd require commands, though: having an animal disappear; changing a compass's target; teleporting...