Test the stream intersection feature

5 traces are provided:
- 3 packets intersecting between two streams slightly offsetted
- Same trace with 3 packets intersecting but with swapped trace file names
- No intersection between packets
- Only one stream
- No streams at all

These traces were generated with the CTF writer API from the master
branch, the binary traces will be replaced by the test program when the
feature arrives in master.

Signed-off-by: Julien Desfossez <jdesfossez@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>