Change the trap_compression extractor option to be an object `trap` with
a nested option `compression`. This means that on the command line you
would supply the option as follows:
codeql database create --extractor-option trap.compression=gzip
This is a little less jarring than the previous design, which would use
underscores amonst the hyphens:
codeql database create --extractor-option trap_compression=gzip
