update spell cache to latest version

[Artur91425]

Backport spell cache to latest version. I checked everything, everything works. In short, the structure of the data recording in the WeakAurasOptionsSaved.spellCache table has been changed.

But, if suddenly you do not want to apply these changes for some reason, then correct the next line https://github.com/Bunny67/WeakAuras-WotLK/blob/536db3089da063336c7fffac5880a3682e995949/WeakAurasOptions/Cache.lua#L39 for if(icon and icon:lower() == "interface\\icons\\trade_engineering") then -- 136243 is the a gear icon, we can ignore those spells