Fix missing namespaces in macros

[FishermanWWK]

Changed the method call to memnew_arr_template in the memnew_arr and the classes in the size validation macros for SafeNumeric and SafeFlag to use the full namespace path to their corresponding method / class. This ensures that if anyone is using these macros in their own code and they don't use using namespace godot; in their code, these macros will still compile.

memnew_arr was the issue I initially ran into, and I came across the SafeNumeric and SafeFlag macros while checking to see if any other macros had this problem. I also found the MAKE_TYPE_INFO* macros in type_info.hpp, as well as MAKE_TYPED_ARRAY and MAKE_TYPED_DICTIONARY* in typed_array.hpp and typed_dictionary.hpp respectively, however, these seemed to be internal macros only, so I've left them untouched since I didn't think anyone would be using these in their own projects (I thought that it might be possible for the SafeNumeric and SafeFlag macros to appear in other projects though, which is why I included them).

[Ivorforce]

Makes sense, thanks for the fix!

[dsnopek]

Thanks!

[dsnopek]

Ah, it looks like this is failing CI for some code style issues which would be fixed by this patch:

diff --git a/include/godot_cpp/templates/safe_refcount.hpp b/include/godot_cpp/templates/safe_refcount.hpp
index 42b3b77..8dd97c3 100644
--- a/include/godot_cpp/templates/safe_refcount.hpp
+++ b/include/godot_cpp/templates/safe_refcount.hpp
@@ -48,11 +48,11 @@ namespace godot {
 //   even with threads that are already running.
 
 // These are used in very specific areas of the engine where it's critical that these guarantees are held
-#define SAFE_NUMERIC_TYPE_PUN_GUARANTEES(m_type)                    \
+#define SAFE_NUMERIC_TYPE_PUN_GUARANTEES(m_type)                             \
 	static_assert(sizeof(::godot::SafeNumeric<m_type>) == sizeof(m_type));   \
 	static_assert(alignof(::godot::SafeNumeric<m_type>) == alignof(m_type)); \
 	static_assert(std::is_trivially_destructible_v<std::atomic<m_type>>);
-#define SAFE_FLAG_TYPE_PUN_GUARANTEES                \
+#define SAFE_FLAG_TYPE_PUN_GUARANTEES                         \
 	static_assert(sizeof(::godot::SafeFlag) == sizeof(bool)); \