[OpenVINO backend] support bool for convert_to_tensor

[Mohamed-Ashraf273]

@rkazants
needs a review.

[rkazants]

@fchollet, looks good to me. Recommend to merge.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.72%. Comparing base (be9b002) to head (bf8c30e).
Report is 3 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #21423      +/-   ##
==========================================
- Coverage   82.72%   82.72%   -0.01%     
==========================================
  Files         565      565              
  Lines       55219    55222       +3     
  Branches     8608     8609       +1     
==========================================
+ Hits        45682    45683       +1     
- Misses       7427     7428       +1     
- Partials     2110     2111       +1     

Flag	Coverage Δ
keras	82.53% <100.00%> (-0.01%)	⬇️
keras-jax	63.33% <0.00%> (-0.01%)	⬇️
keras-numpy	58.53% <0.00%> (-0.01%)	⬇️
keras-openvino	33.79% <100.00%> (-0.01%)	⬇️
keras-tensorflow	63.74% <0.00%> (-0.01%)	⬇️
keras-torch	63.37% <0.00%> (-0.01%)	⬇️

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