Add conda install option for `pyctcdecode`

[sugatoray]

A conda installation option could be very helpful. I have already started working on this, to add pyctcdecode to conda-forge.

Conda-forge PR:

• https://github.com/conda-forge/staged-recipes/pull/17602

Once the conda-forge PR is merged, you will be able to install the library with conda as follows:

conda install -c conda-forge pyctcdecode

:bulb: I will push a PR to update the docs once the package is available on conda-forge.

[sugatoray]

cc: @gkucsko @poneill

It is now available on conda-forge channel. :tada:

[sugatoray]

You can run the following command to check version and avilability of pyctcdecode on conda-forge channel.

$ conda search -c conda-forge pyctcdecode
Loading channels: done
# Name                       Version           Build  Channel             
pyctcdecode                    0.3.0    pyhd8ed1ab_0  conda-forge