Fix connecting Any as inpt

[PProfizi]

Error was raised when doing:

from ansys.dpf.core import operators as ops

f1 = ops.utility.forward()
f2 = ops.utility.forward()
f2.inputs.any.connect(f1.outputs.any)

Error marked pin connection as ambiguous due to mismanagement of Any pin type in Operator._find_outputs_corresponding_pins.

The whole Input.connect and Inputs.connect needs a big refactor.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.37%. Comparing base (ff8e662) to head (d392596).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1991      +/-   ##
==========================================
- Coverage   88.44%   88.37%   -0.07%     
==========================================
  Files          89       89              
  Lines       10251    10251              
==========================================
- Hits         9066     9059       -7     
- Misses       1185     1192       +7