Remove sleuthkit prebuilt library, link with copy built in osquery core

[chouchouzzj]

Well , base on #68

I add this code in file: cmake/flags.cmake
set(CMAKE_MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")

And then
cmake --config Release --build .
It works well.
and this following part works well too.
cmake --config RelWithDebInfo --build .

but, when I want to debug the code, errors come.
cmake --config Debug --build .

And here are the errors message( Same as #68) :
Libtsk.lib (db_sqlite. Obj) : Error LNK2038: "RuntimeLibrary" mismatch detected:Value "MT_StaticRelease" mismatch value "MTd_StaticDebug" (in osquery_extension_group_main.obj) [D:\build\External\extension_trailofbits\ trailofbits_osquery_extensions.vcxProj]
Libcpmt.lib (xstol. Obj) : Error LNK2038: "RuntimeLibrary" mismatch detected:Value "MT_StaticRelease" mismatch value "MTd_StaticDebug" (in osquery_extension_group_main.obj) [D:\build\External\extension_trailofbits\ trailofbits_osquery_extensions.vcxProj]

[mike-myers-tob]

Hi again @chouchouzzj – we think what is happening here is that we provided a precompiled SleuthKit library in our extension, and it was not a debug build binary, so you have linker errors with debug builds.

Since osquery now also builds the SleuthKit library, the fix here is for someone to link our extension(s) to that library rather than the one provided in the trailofbits-extensions repo, and we ought to remove our prebuilt one.

I can't provide a timeframe for when we will get that done, but it seems pretty straightforward.