[Minor] Randomized anims for several behaviors

[Coronia]

Allow several Phobos anim logic to display one of the random anims in the list, instead of one fixed anim. Most of them are related to destroy/take damage behaviors. You can either use their old tags to input the list directly, or use the following new tags in plural forms to override them.

In rulesmd.ini:

[SOMESHIELDTYPE]                            ; ShieldType name
BreakAnim=                                  ; list of Animation
BreakAnims=                                 ; list of Animation, overrides BreakAnim
HitAnim=                                    ; list of Animation
HitAnims=                                   ; list of Animation, overrides HitAnim

[SOMEWARHEAD]                               ; WarheadType
Shield.BreakAnim=                           ; list of Animation
Shield.BreakAnims=                          ; list of Animation, overrides Shield.BreakAnim
Shield.HitAnim=                             ; list of Animation
Shield.HitAnims=                            ; list of Animation, overrides Shield.HitAnim

[SOMETECHNO]                                   ; TechnoType
PassengerDeletion.Anim=                         ; list of Animation
PassengerDeletion.Anims=                        ; list of Animation, overrides PassengerDeletion.Anim
AutoDeath.VanishAnimation=                     ; list of Animation
AutoDeath.VanishAnimations=                    ; list of Animation, overrides AutoDeath.VanishAnimation

[SOMEANIM]                             ; AnimationType
CreateUnit.SpawnAnim=                  ; list of Animation
CreateUnit.SpawnAnims=                 ; list of Animation, overrides CreateUnit.SpawnAnim

[SOMETERRAINTYPE]  ; TerrainType
DestroyAnim=       ; list of Animation
DestroyAnims=      ; list of Animation, overrides DestroyAnim

[github-actions]

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[Starkku]

Add a function to create random anim from std::vector<AnimTypeClass*> in AnimExt or something instead of copypasting the same thing across the place.

[MortonPL]

What Starkku said.

Additionally, I think that adding a separate tag is unnecessary, because changing *Anim to work with a list is backwards compatible (from INI perspective) and less confusing than an extra override. Depends on what others think.

[MortonPL]

Please add an entry in the changelog and credits as well.

[MortonPL]

Suggested change

	AnimClass* AnimExt::CreateRandomAnim(std::vector<AnimTypeClass*> AnimList, CoordStruct coords, TechnoClass* pTechno, HouseClass* pHouse, bool invoker)
	AnimClass* AnimExt::CreateRandomAnim(const std::vector<AnimTypeClass*>& AnimList, CoordStruct coords, TechnoClass* pTechno, HouseClass* pHouse, bool invoker)

Since we're only accessing elements, this vector should be passed as an immutable reference.