[EflSharp] Fix constructor of MoreOption and RotarySelector (#959)

[EflSharp] Fix constructor of MoreOption and RotarySelector (#959)

Now, EoWrapper does not have constructor with parameter IntPtr.
Instead, EoWrapper has constructors with paramater ConstructingHandle
and WrappingHandle.

Since ConstructingHandle is created internally, the constructor with
parameter ConstructingHandle should be used for internal usage.
Instead, constructor with parameter WrappingHandle should be used to use
C native handle (i.e. eo pointer in C).