Collision: Added C Src and Example

This module was initially known as GroveCollision. It has been
now changed to Collision. C source and examples added.

Signed-off-by: Abhishek Malik <abhishek.malik@intel.com>

src/grovecollision/CMakeLists.txt

@@ -1,9 +0,0 @@
-upm_mixed_module_init (NAME grovecollision
-    DESCRIPTION "upm grovecollisionsensor module"
-    C_HDR grovecollision.h
-    C_SRC grovecollision.c
-    CPP_HDR grovecollision.hpp
-    CPP_SRC grovecollision.cxx
-    FTI_SRC grovecollision_fti.c
-    CPP_WRAPS_C
-    REQUIRES mraa)