Move types into own namespace

src/types.hh

@@ -6,7 +6,7 @@
 #include "daisysp.h"
 
 namespace Heck {
-
+    namespace Types {
         // fundamental types
         using u8 = uint8_t;
         using u16 = uint16_t;
@@ -20,7 +20,9 @@ namespace Heck {
 
         using f32 = float;
         using f64 = double;
+    }
 
+    using namespace Types;
     // namespace aliases
     namespace ld = daisy;
     namespace dsp = daisysp;