Add debug logging for the dependency calculation for load/sync files in REPL

[cursive-ghost]

This is frequently confusing for users, and it would be useful to have some debug logging around what's being calculated to help them debug issues.

[onetom]

Part of this problem is that REPL commands can't do both Sync modified files and Load current file too, before executing the command. It feels like Sync modified files doesn't count the current file modified; probably because it's not saved yet at the time of computing the "modified files". I do have the Save all files before executing option checked, but it still doesn't counts the current file as a modified file.

[onetom]

I keep encountering this issue, but I forgot it was already filed, so I made another, more detailed description of my specific use-case, which might help to improve this topic: https://clojurians.slack.com/archives/C0744GXCJ/p1656567319736669