Replace cryptokaizen with causify-ai in links

[sonniki]

We still have links in the codebase that use the old GH Org name cryptokaizen instead of the new one causify-ai. Let's find all instances and replace with the new name.

[gpsaggese]

We can also do a replacement _ck -> _csfy and ck -> csfy

I'll file another one but we should do it in chunks (e.g., finding all the functions that need to be changed and then doing them one by one or in chunks), running the regressions.

To make sure that other repos are fine, we have used is to create a script to do the clean up so that other people can do the clean in their repo easily. There is a doc explaining all this docs/work_tools/all.codebase_clean_up.how_to_guide.md

I'll turn this into a GFI