feat(tests_vec3f): add vec3 tests

tests/tests_config.c

@@ -0,0 +1,16 @@
+#include "../src/math/mconfig.h"
+#include <stdio.h>
+
+void config() {
+    #if defined (SIMD_X86)
+        printf("SIMD enabled: X86\n");
+    #elif defined (SIMD_ARCH)
+        printf("SIMD enabled: ARCH\n");
+    #else
+        printf("SIMD disabled\n");
+    #endif
+}
+
+int main() {
+    config();
+}