Add CMake knobs to suppress building tests

[ismaell]

• BUILD_NTOX for nTox
• BUILD_AV_TEST for the toxav test

---

This change is 

[iphydf]

Thanks for your contribution, this is useful to have. I just have one minor remark. Let me know if you feel otherwise.

---

Reviewed 1 of 1 files at r1.
Review status: all files reviewed at latest revision, 1 unresolved discussion.

---

CMakeLists.txt, line 468 at r1 (raw file):

option(BUILD_AV_TEST "Build toxav test" ON)
if(NOT WIN32 AND BUILD_AV_TEST
   AND BUILD_TOXAV AND SNDFILE_FOUND AND PORTAUDIO_FOUND AND OPENCV_FOUND)

Minor nit: put the BUILD_* on one line, and the *_FOUND ones on the next line.

---

Comments from Reviewable

[iphydf]

Ok, thanks. This looks fine. Can you make it either 1 or 2 commits? The reordering doesn't need to be its own commit.

[iphydf]

---

Reviewed 1 of 1 files at r2.
Review status: all files reviewed at latest revision, 1 unresolved discussion.

---

Comments from Reviewable

[GrayHatter]

@ismaell thanks mate! I've been commenting them out otherwise... this is already really helpful!!!

[ismaell]

@GrayHatter you're welcome.