Add Rust support for the common interface to declare and register all
parsers.
Add a common structure definition to contain all required elements
required for registering a parser, similar to the C interface.
This also reduces the risk of incorrectly registering a parser: the
compiler prevents omitting required functions from the structure, and
functions (even if external) are type-checked. Optional functions are
explicitly marked.
Initial version of a filetracker API that depends on the filecontainer
and wraps around the Suricata File API in C.
The API expects chunk based transfers where chunks can be out of order.
Wrapper around Suricata's File and FileContainer API. Built around
assumption that a rust owned structure will have a
'SuricataFileContainer' member that is managed by the C-side of
things.
Where the context is a struct passed from C with pointers
to all the functions that may be called.
Instead of referencing C functions directly, wrap them
in function pointers so pure Rust unit tests can still run.