Support float/double types

[disconnect3d]

Even when cint stays for integers, it would be cool to add support for float/double types.

[disconnect3d]

Some nice things we want here: 1) Ability to create the float/double from its binary representation (e.g. F32.from_le(0x1234) should create the float from its little-endian representation, .from_be(..) from big endian) etc. 2) Methods to convert to int value and a string binary representation

In [12]: bin(ctypes.c_float(float('NaN')))
---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
Cell In[12], line 1
----> 1 bin(ctypes.c_float(float('NaN')))

TypeError: 'c_float' object cannot be interpreted as an integer

3) Support for special values (NaN, -0, -inf, +inf), it should probably work out of the box:

In [10]: ctypes.c_float(float('NaN'))
Out[10]: c_float(nan)

4) Support for various math operators, e.g., this should just work:

In [11]: ctypes.c_float(float('NaN')) + 2
---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
Cell In[11], line 1
----> 1 ctypes.c_float(float('NaN')) + 2

TypeError: unsupported operand type(s) for +: 'c_float' and 'int'