Added the baseline for the Coach Mode feature

- Added the command '/details coach' to  enabled coach mode, need to be raid leader and all members must have details up to date.
- Fixed Tiny Threat not showing threat.
- Fixed annoucement interrupt toggle enable was reseting on logon.
- Added container_spells:GetOrCreateSpell(id, shouldCreate, token)
- Added Details:GetRaidLeader(), return the RL name.
- Framework update.

startup.lua

@@ -458,6 +458,9 @@ function Details:StartMeUp() --I'll never stop!
 		C_Timer.After(2, reset_player_detail_window)
 	end
 	
+	--coach feature startup
+	Details.Coach.StartUp()
+
 	--enforce to show 6 abilities on the tooltip
 	--_detalhes.tooltip.tooltip_max_abilities = 6 freeeeeedooommmmm