[Implement] Filter Sanity-Check Regex

[acagliano]

Some manner of identifying the makeup of a packet for the packet filter to interpret. Something similar to fprint's format, except such that it gives you the following info for each packet segment:

data type: id,string, int, word, byte, float, etc.
length: length of packet segment
check: 1 or 0. 1 means yes, filter this segment. 0 means no, don't filter segment.

For instance, a search format for a Register packet containing a 7-byte username, a 12-byte password, a 27-byte email address would look something like this:

[ID][1][0]
[STRING]7,1
[STRING]12,1
[STRING]27,1