Release v0.9.3

• [hotfix] Fix enum type name in namespace/class (https://github.com/Neargye/magic_enum/issues/281)
• Add enum_next_value and enum_prev_value in <magic_enum_utility.hpp> (https://github.com/Neargye/magic_enum/issues/280)
• Move enum_for_each to <magic_enum_utility.hpp>
• Add <magic_enum_all.hpp>
• Add option MAGIC_ENUM_NO_ASSERT
• Add option MAGIC_ENUM_NO_EXCEPTION
• Add option MAGIC_ENUM_ENABLE_HASH_SWITCH
• Fix error with _ITERATOR_DEBUG_LEVEL on msvc