feat: add -DBUILD=test & test CI

include/test/kernels.hpp

@@ -0,0 +1,15 @@
+#ifndef _TEST_KERNELS_H_
+#define _TEST_KERNELS_H_
+
+#include <iostream>
+
+namespace base16384 {
+class test {
+ public:
+  // base16384_test_kernels_basic is a demo calculation that implements
+  // mod, bit, plus and mul calculations.
+  SYCL_EXTERNAL static std::uint8_t kernels_basic(uint8_t in);
+};
+}  // namespace base16384
+
+#endif