Promote experimental::dynamic_map to cuco::dynamic_map

[PointKernel]

This PR promotes cuco::experimental::dynamic_map to cuco::dynamic_map and removes the legacy implementation.

Changes:

• Added erase, find, contains, retrieve_all methods
• Added size(), capacity(), load_factor() getters
• Added sentinel and hash function getters (empty_key_sentinel(), erased_key_sentinel(), key_eq(), hash_function())
• Updated all tests and benchmarks to use the new API
• Added insert_or_assign

Closes #732

[PointKernel]

@sleeepyjack should we remove legacy dynamic_map directly in this PR so we can start deprecating the legacy static_map next (which is used by the legacy dynamic_map)?