mod-multi-imp

Lets a warlock have more than one imp (Kanboard ticket #778).

• The real imp stays the only "Pet": pet bar, DB persistence, talents.
• Each cast of Summon Imp (688) also spawns MultiImp.ExtraCount extra imps as guardians (SummonProperties 61, entry 416).
• Extras inherit the real imp's state: react state (aggressive / defensive / passive), follow / stay, and attack target. Firebolt is cast by the module (guardians get no PetAI from the core).
• Re-casting replaces the extras (no stacking). They are topped up after combat and vanish with the real imp. Summoning another demon ends the effect.
• Extras are not on the pet bar and not saved in the DB.

Config: conf/mod_multi_imp.conf.dist (MultiImp.*). No SQL.

Build note: this module is compiled automatically because it lives in modules/. Function Addmod_multi_impScripts() in src/MultiImp_loader.cpp is required by the generated module loader.