Runtime: Make use of std::make_unique where applicable

Makes use of the C++14 make_unique allocation function to allocate class
instances where applicable instead of a reset with a new operator within
it.

This doesn't touch cases where buffers are allocated, given make_unique
would zero-initialize them.

Runtime/MP1/World/CPuddleSpore.cpp

@@ -37,7 +37,7 @@ CPuddleSpore::CPuddleSpore(TUniqueId uid, std::string_view name, EFlavorType fla
 , x614_25(false) {
   x5dc_elemGens.reserve(kEyeCount);
   for (u32 i = 0; i < kEyeCount; ++i)
-    x5dc_elemGens.emplace_back(new CElementGen(x5d0_));
+    x5dc_elemGens.emplace_back(std::make_unique<CElementGen>(x5d0_));
   x5ec_projectileInfo.Token().Lock();
   x460_knockBackController.SetAutoResetImpulse(false);
 }