Move text logcat regex strings to shared header

To avoid further duplication of work and bugfixing,
move regex strings to wiretap/logcat_text.h and include
this file in epan/dissectors/packet-logcat-text.c

Change-Id: I82773cda0e3240844139b104c68738ec82788014
Reviewed-on: https://code.wireshark.org/review/5410
Petri-Dish: Michal Labedzki <michal.labedzki@tieto.com>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Michal Labedzki <michal.labedzki@tieto.com>