Merge pull request #1949 in SNORT/snort3 from ~OSERHIIE/snort3:trace_bitmask to master

Merge pull request #1949 in SNORT/snort3 from ~OSERHIIE/snort3:trace_bitmask to master

Squashed commit of the following:

commit 4cccd12b0aacbc85543aabc63db1ad5212bc4a7d
Author: Oleksandr Serhiienko <oserhiie@cisco.com>
Date:   Wed Feb 12 19:31:05 2020 +0200

    detection: refactoring updates to detection. Moved DetectionModule into a separate file.

commit cded4b12458ea9d4c7456ebd93041482a91c2a30
Author: Serhii Vlasiuk <svlasiuk@cisco.com>
Date:   Tue Feb 4 20:34:00 2020 +0200

    framework: add generic convertation trace string to bitmaks.

commit 29c144ae2e148b35d76bebef24146d84adc83311
Author: Oleksandr Serhiienko <oserhiie@cisco.com>
Date:   Thu Jan 16 17:08:49 2020 +0200

    detection: added support for trace config option to take a list of strings with verbosity level instead of bitmask