Thanks for the answer!
I did not know that there already was a similar Addon.
Well If i just know how to do this I really would try it by my own. But I dont have any experience in creating addons
I thought of some sort of Library, where you can for example type in a word you searching an icon for and if there is one it then throws it out on the screen with code and maybe an appropiate picture. Or a "simple" Codelist divided in categories. I also thought about the possibility to just copy and paste the existing list you where mentioning, show the list in an ingame window name it "imagesource" and tell the people "type |tX:Y:imagesource|t but the previews of the icons is another question :/. To be honest: After looking up the internet for quiet a while I found the site you where mentioning and yes youre damn right, it looks like a hell of a work. And probably no one is interested in keeping this library up to date I totally can understand this.
I, for myself used the addon named "Notebook 2018" and tried to write down the ones I personally like the most (because the icons actually work with Notebook 2018) a page is limited to 1900 characters and... its just not enough xD and you always have to double check if the icon suits your needs. and furthermore you dont have an overview or image preview.
Well I guess I need to do it the old way... typing down the things I like the most ^^
But really, thank you for your answer and to all Authors: thank you for you great work. Eso wouldnt be Eso without your work!