Handle potential memory allocation fail

[cmarshall108]

When trying to allocate memory using malloc, this can sometimes fail if the operating system does not have any available memory to allocate of the size specified. We should properly handle this and return a NULL pointer when trying to allocate structs and in some cases handle this through assertions. Right now this is being handled by the way of just assertions, which works but is not a preferred method of handling it for obvious reasons...

Reference:
https://github.com/AnythingTechPro/vulkan/blob/5a6027ed497f3e0d0d95050c27931861813e2fae/src/core/transaction.c#L63