Initiate EML Assembly Line ecology metadata management tutorial

[yvanlebras]

First complete version

[yvanlebras]

Hi @shiltemann @hexylena just added you as reviewers for this tutorial I want to use next week (sorry for the delay...) for a training (and I hope I can use it through Tiaas @bgruening ). the idea is to have a first version and then we will gather feedbacks and come back to it to update it

[hexylena]

i am happy to merge it right now, if you add draft: true to the top, so you can use it in your training.

otherwise, here is a first round of GTN formatting comments, I guess it will take some time to get it to GTN standards.

[hexylena]

i checked that it isn't a live api key :) and in the process found this could use more documentation.

1. you need to register
2. and then go to the 'profile' on cedar.metadatacenter.org
3. and there you can find the API key (I was having issues locating it, otherwise.)

[yvanlebras]

Done, thank you!

[yvanlebras]

THNAK YOU so much @hexylena ! I hope I add the draft: true mention as appropriate so we can merge it now, and I started to ameliorate the content notably thnks to all your feedback!!!! THANK YOU so much! Hope all is ok on your side!

[hexylena]

https://training.galaxyproject.org/training-material/topics/ecology/tutorials/MetaShARK_tutorial/tutorial.html

something is odd with the images, I am not sure why they didn't render.

[yvanlebras]

THANK YOU !!!!
I just make another PR as it seems I forgot to rewrite links to png images in a GTN manner in a lot of images...
#4769