* build message lookup table in dbc
* constify it
* no need to make this more dense
* Return empty values and log an error for invalid addresses.
log error for undefined signal
add comment
use LOGE
* save one map lookup
* only try what is to be traught
* rename back
* from merge
* show addr
---------
Co-authored-by: Shane Smiskol <shane@smiskol.com>