Add sanitizer option to build and add CI that uses it (#184)

CMakeLists.txt

@@ -45,6 +45,17 @@ endif()
 set (LWS_BUILD_TESTS "${BUILD_TESTS}")
 set (BUILD_TESTS "Off")
 
+option(SANITIZER "Use specific sanitizer" OFF)
+if(NOT SANITIZER STREQUAL "OFF")
+  if (MSVC)
+    message(FATAL_ERROR "Cannot sanitize with MSVC")
+  else()
+    message(STATUS "Using sanitizer=${SANITIZER}")
+    add_compile_options("-fsanitize=${SANITIZER}")
+    add_link_options("-fsanitize=${SANITIZER}")
+  endif()
+endif()
+
 if(STATIC)
   if(MSVC)
     set(CMAKE_FIND_LIBRARY_SUFFIXES .lib .dll.a .a ${CMAKE_FIND_LIBRARY_SUFFIXES})