Fixes and improvements for Python example

[Lamarqe]

1. Fix compile error when building with RTLSDR (include not found)
2. Fix DataOut handler by adding brackets to the method signature
3. Fix GCC build warnings related to deprecated CPython functions
4. Fix CMake build warnings by adding project name
5. Fix CMake build warnings by increasing minimum version to a supported release
6. Fix CMake build warnings related to FFTW3 partially by aligning to upper case
7. Enhancement: Find correct Python in cmake automatically (by using official package find definitions)
8. Enhancement: Add mot data handler for images