Enable conda build

[mingjie-intel]

Add conda build for linux and windows. Both build instructions and workflow to upload it to anaconda servers where added.

Test upload could be found here:
https://anaconda.org/dppy/dpbench

Installation process is as simple as:

conda create -n dpbench-conda-test dpbench -c dppy/label/dev -c conda-forge -c intel -c nodefaults --override-channels
conda activate dpbench-conda-test
dpbench -a run
dpbench report

Works both on linux and windows

[diptorupd]

As discussed we need a conda-package workflow along with the conda recipe to verify that the recipe works. We can borrow what we are doing in dpctl or numba-dpex. The workflow should build the package, test it, and the upload to dppy/label/dev.

Changes applied