code: Use std::span where appropriate (#6658)

* code: Use std::span when possible

* code: Prefix memcpy and memcmp with std::

src/core/tracer/recorder.cpp

@@ -180,7 +180,7 @@ void Recorder::MemoryAccessed(const u8* data, u32 size, u32 physical_address) {
     element.uses_existing_data = (memory_regions.find(element.hash) != memory_regions.end());
     if (!element.uses_existing_data) {
         element.extra_data.resize(size);
-        memcpy(element.extra_data.data(), data, size);
+        std::memcpy(element.extra_data.data(), data, size);
         memory_regions.insert({element.hash, 0}); // file offset will be initialized in Finish()
     }
 

src/core/tracer/recorder.h

@@ -4,6 +4,7 @@
 
 #pragma once
 
+#include <span>
 #include <string>
 #include <unordered_map>
 #include <vector>