add cmake

src/kem/sike/CMakeLists.txt

@@ -0,0 +1,12 @@
+set(
+  SRC_CLEAN_SIKE_P434
+  p434/fpx.c
+  p434/isogeny.c
+  p434/fp_generic.c
+  p434/params.c
+  p434/sike.c)
+
+define_kem_alg(
+  sike_p434_clean
+  PQC_SIKEP434_CLEAN "${SRC_CLEAN_SIKE_P434}" "${CMAKE_CURRENT_SOURCE_DIR}")
+