There isn't, but there's a way to make one if you don't mind a recompile.
Grab the source from github or a tarball, then go into the src directory and say
make NE_TEST=1
./ne
Immediately quit. DO NOT install the test version, as it disables a bunch on things and generally allows screen updates to go weird. The point of NE_TEST is to allow some torture tests to run unattended, so prompts don't happen, etc. However, the first thing it does after processing your .ne/.keys and .ne/.menus files is it dumps its configuration into a file called ne_test_dump_config. This file contains all the key mappings. Then
make clean
to get rid of the test versions.