feat: add (MGEF & SPEL) reverse and calculation for spell damage to server side

Behavior: Implement spell damage calculation in TES5SpellDamageFormulaImpl::CalculateDamage() in TES5DamageFormula.cpp . Update ActionListener::OnSpellCast() in ActionListener.cpp to log spell damage.
Data Structures: Add Flags enum to MGEF and SpellFlags , CastType , Delivery , SPITData , EFIT , Effect structs to SPEL in MGEF.h and SPEL.h . Update MGEF::GetData() and SPEL::GetData() in MGEF.cpp and SPEL.cpp to handle new data structures.
Logic: Modify MpActor::ApplyMagicEffect() in MpActor.cpp to handle new spell types and effects. Update MpActor::ApplyMagicEffects() in MpActor.cpp to apply multiple effects.
Misc: Fix logging message in ActionListener::OnSpellCast() in ActionListener.cpp to include damage value.

Add (MGEF & SPEL) reverse and calculation for spell damage to server side

[!IMPORTANT] Add server-side spell damage calculation and update related data structures and logic for MGEF and SPEL records.

Behavior:

Implement spell damage calculation in TES5SpellDamageFormulaImpl::CalculateDamage() in TES5DamageFormula.cpp.

Update ActionListener::OnSpellCast() in ActionListener.cpp to log spell damage.

Data Structures:

Add Flags enum to MGEF and SpellFlags, CastType, Delivery, SPITData, EFIT, Effect structs to SPEL in MGEF.h and SPEL.h.

Update MGEF::GetData() and SPEL::GetData() in MGEF.cpp and SPEL.cpp to handle new data structures.

Logic:

Modify MpActor::ApplyMagicEffect() in MpActor.cpp to handle new spell types and effects.

Update MpActor::ApplyMagicEffects() in MpActor.cpp to apply multiple effects.

Misc:

Fix logging message in ActionListener::OnSpellCast() in ActionListener.cpp to include damage value.

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skyrim-multiplayer / skymp

feat: add (MGEF & SPEL) reverse and calculation for spell damage to server side #2193