runtime module allocation checker

[xxshady]

research if it's possible to add some checks to #[global_allocator] to prevent memory misuse

example misuse:

1. module A creates Vec
2. *mut Vec is passed via host to module B (different global allocator)
3. module B pushes something to the vec, tries to dellocate old allocation (owned by module A)
4. boom

• check in dealloc if pointer is known
• somehow check if module allocation is still alive when it's dereferenced from host binary or other module
• what about references to static variables?