[New Operator] Added ConvertTo operator

[paveltc]

Motivation

Adds the C++ and Python implementations of the ConvertTo operator that converts the data type of an input tensor to a different data type for the output tensor.

Technical Details

The ConvertTo operator is used for converting a tensor from one data type to another. Works for all data types except unsigned int32.

Test Plan

The PR also includes the C-Model against which the host and device kernels are checked. Includes tests for 1, 3 and 4 channels for various different data types. Also has the Python Pytest test which does tests on all permutations of data types and channels.

Test Result

All C++ and Python tests pass.

Submission Checklist

• Look over the contributing guidelines at https://github.com/ROCm/ROCm/blob/develop/CONTRIBUTING.md#pull-requests.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 76.08696% with 22 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
src/op_convert_to.cpp	77.22%	2 Missing and 16 partials ⚠️
include/kernels/host/convert_to_host.hpp	75.00%	0 Missing and 3 partials ⚠️
include/core/detail/casting.hpp	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             develop     #104   +/-   ##
==========================================
  Coverage           ?   73.72%           
==========================================
  Files              ?       72           
  Lines              ?     2793           
  Branches           ?      608           
==========================================
  Hits               ?     2059           
  Misses             ?      327           
  Partials           ?      407           

Files with missing lines	Coverage Δ
include/core/image_format.hpp	0.00% <ø> (ø)
include/core/detail/casting.hpp	75.95% <0.00%> (ø)
include/kernels/host/convert_to_host.hpp	75.00% <75.00%> (ø)
src/op_convert_to.cpp	77.22% <77.22%> (ø)

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