Draft: fix failed onnx tests

Context

This MR is intended to fix the failed onnx tests.

This includes the following problems:

• And/Equal: A mistake was made, the operator Equal was named And.
• AvgPooling: unsupported attrs dilations, count_include_pad, ceil_mode
• MaxPooling: unsupported attr dilations

Detailed major modifications

The following modifications were made:

• Add Equal operator
• Fix And operator
• Add dilations attr to Maxpooling
• Add dilations, count_include_pad and ceil_mode to AvgPooling

TODO

This MR would only fix the following:

• Add Equal Op
• Fix And Op
• AvgPooling: add dilations, count_include_pad, ceil_mode attrs
• MaxPooling: add dilationsattr

aidge_backend_cpu/__init__.py

 import aidge_core
 from aidge_backend_cpu.aidge_backend_cpu import * # import so generated by PyBind
-from ._version import *