1fa0ef6f56
- Move std_alloc, opt_alloc and custom_alloc into alloc/std, alloc/mimalloc and alloc/custom to mirror convention of gc, gcScheduler modules. - Add alloc/common with common allocator API - Add alloc/legacy with common implementation details of alloc/std and alloc/mimalloc. alloc/custom does not depend on alloc/legacy. - Removes experimental_memory_manager_custom as it's now unused - Additionally, renames experimental_memory_manager module into mm