add llms.txt file for easier use with llms#157

schwzr wants to merge 3 commits intomaindatasharingframework/datasharingframework.github.io:mainfrom

156-add-llmstxt-file-for-easier-use-with-llmsdatasharingframework/datasharingframework.github.io:156-add-llmstxt-file-for-easier-use-with-llmsCopy head branch name to clipboard