add some fixed size type definitions inspired from by the rust types.

They are just handy and clean.

src/types.hh

@@ -0,0 +1,19 @@
+#ifndef HECK_DAISY_TYPES_HH
+#define HECK_DAISY_TYPES_HH
+
+#include <cstdint>
+
+using u8 = uint8_t;
+using u16 = uint16_t;
+using u32 = uint32_t;
+using u64 = uint64_t;
+
+using i8 = int8_t;
+using i16 = int16_t;
+using i32 = int32_t;
+using i64 = int64_t;
+
+using f32 = float;
+using f64 = double;
+
+#endif