Heap analysis

[zer1t0]

heap module

This pull request includes:

1. A MemoryMaps class (in pwnlib/util/proc) that allows to parse the memory
   maps of a process (/proc//maps)

2. A heap module (in pwnlib/heap/) that allows to get the information of the arena.

The heap module includes:

• The HeapExplorer class, that it is the main interface that
  allows to invoke the functionality of the rest of the module.

• The malloc_state submodule to parse and obtain info from the malloc_state
  structure.

• The heap submodule to get the info about the heaps of the process.

• The bins submodule that allows to parse and manage the information about
  the bins of the arena. In includes modules/classes for each bin type:

  • Tcache
  • Fast bins
  • Unsorted bin
  • Small bins
  • Large bins

• The arena submodule, that contains the Arena class that storages all the
  information about the arena: heap, malloc_state, and bins.

• The ProcessInformer (heap/process_informer) class to obtain information
  about the process. Maybe its functionality should be provide by another module
  of pwntools.

Each class contains doc tests that provides examples of its use.

[zer1t0]

any updates here?

[Arusekk]

I hate to be pessimistic, but I believe this would better belong to projects like pwndbg. As for the realistic stuff, there are several merge conflicts standing in the way.