Per domain request headers

[Batwam]

Hello,

I am currently adding cookie data in the request headers in order to skip the authentication stage. I can paste the data into the watch and this works fine. I have however also seen in the doc that this information can be specified in a file saved in the datastore folder: https://github.com/dgtlmoon/changedetection.io/wiki/Adding-headers-from-an-external-file

the method seems to be:

1. common header for all watches (/datastore/headers.txt)
2. 1 header per watch (/datastore/d4e929f1-d467-491f-94e9-139537b9bd91/headers.txt)
3. 1 header per tag (/datastore/headers-favourite.txt)

In my case, since it's for authentication, it means that I could update a single file rather than multiple watches which is great, but I would like to have 1 header per domain so all watches for a given domain use the same header. I would be ok to manually input the path into the field but it doesn't seem to accept file paths, only actual header file content. I could work around it by creating 1 tag per domain but it's going to look a bit ugly.

Is there an easy solution for this use case? either possibility to specify the header file name/path or being able to define a specific header file for all watches of a given domain?