Fix FillOperation to_json function

Fix FillOperation to_json function

serialize tensor without testing

fix unity input order bug, next step is to test the tensor serialization

serialize tensor, testing code in tensor_test.cc

change for tensor serialization

changes after review

changes after review

clang-format the files

rename

exposing json

WIP fix for removing templates

Removing templates part 1

replacing core/constants.h

removed template part 2

Changed fake data to filler data

Fixing CI

Fix CI part 2

CI fix part 2

Fix CI 3

Fixed lizard for data_util

Fixed clang

Fixing CI part 4

Added Distributed sampler option

Fix style