refactor: reorganize src model layout (#1615)

src/model_io/gguf_io.cpp

@@ -5,9 +5,9 @@
 #include <string>
 #include <vector>
 
+#include "core/util.h"
 #include "gguf.h"
 #include "gguf_reader_ext.h"
-#include "util.h"
 
 static void set_error(std::string* error, const std::string& message) {
     if (error != nullptr) {

src/model_io/gguf_reader_ext.h

@@ -6,8 +6,8 @@
 #include <string>
 #include <vector>
 
+#include "core/util.h"
 #include "ggml.h"
-#include "util.h"
 
 struct GGUFTensorInfo {
     std::string name;

src/model_io/pickle_io.cpp

@@ -8,7 +8,7 @@
 #include <vector>
 
 #include "binary_io.h"
-#include "util.h"
+#include "core/util.h"
 
 // $ python -m pickletools sd-v1-4/archive/data.pkl | head -n 100
 //     0: \x80 PROTO      2

src/model_io/safetensors_io.cpp

@@ -7,8 +7,8 @@
 #include <vector>
 
 #include "binary_io.h"
+#include "core/util.h"
 #include "json.hpp"
-#include "util.h"
 
 static constexpr size_t ST_HEADER_SIZE_LEN = 8;
 

src/model_io/torch_legacy_io.cpp

@@ -7,8 +7,8 @@
 #include <unordered_map>
 #include <vector>
 
+#include "core/util.h"
 #include "pickle_io.h"
-#include "util.h"
 
 // torch.save format background:
 //