update: move ShortCode constants in namespace klotski

src/klotski/short_code/offset/all_cases_offset.h

@@ -2,9 +2,11 @@
 
 #include <cstdint>
 
-const uint32_t ALL_CASES_OFFSET[16] = {
-           0,  2942906,  5203298,  8146204,
-     8146204, 10468254, 12345199, 14667249,
-    14667249, 16989299, 18866244, 21188294,
-    21188294, 24131200, 26391592, 29334498,
-};
+namespace klotski {
+    const uint32_t ALL_CASES_OFFSET[16] = {
+               0,  2942906,  5203298,  8146204,
+         8146204, 10468254, 12345199, 14667249,
+        14667249, 16989299, 18866244, 21188294,
+        21188294, 24131200, 26391592, 29334498,
+    };
+}