Nope. The API is extremely limited. Very little of the Lua file library is implemented. The latest API (U25, 11-05-2019) docs are at:
https://www.lotrointerface.com/downl...mentation.html
We can access .lua and .plugindata files as long as we know the file names ahead of time or the user provides them (that is trickier but can be done) but that is it. No other file types and no directory functionality at all. Note, access to .plugindata files is also very limited but at least there are workarounds for that (see
https://www.lotro.com/forums/showthr...gins+for+noobs if you haven't already)