Added simple autocycler_wrapper helper script

[iskold]

Hi Ryan!

This helper script is a wrapper for the autocycler workflow based on the documentation.
In addition, it saves all the output in a user-specific folder and uses lrge if it is available in the system path.

I wasn't sure how to make a pull request for the wiki, but here is my suggested addition to the wiki as a section at the bottom of https://github.com/rrwick/Autocycler/wiki/Fully-automated-assembly:

Hope this PR makes sense! Feel free to edit and change (or reject) as you like.

Running Autocycler as a single command using a wrapper
There is a wrapper script that does the above example where you can also specify the name of the output folder. It can be run in the following way (using the default parameters of 4 read subsets and 16 threads) where it will save the output in a folder called 'autocycler_out':

autocycler_wrapper.sh ont.fastq.gz autocycler_out 4 16

The above example is useful if you wish to run autocycler on many samples in the same folder.

It's general usage is: autocycler_wrapper.sh <reads> <output_folder> <read_partitions> <threads>

[iskold]

I forgot to write, that I took the liberty to comment out the 'lja' assembler from the conda environment yaml file, as it conflicts with the latest (and final!) canu release version 2.3. The logic is that the example in the documentation uses canu and not lja, so I assumed most users would prefer to have the latest version of canu instead.