Create function to read just the rom header so the rom list loads up way quicker (instantaneous on my shitty work laptop)

external/ircolib/file.hpp

@@ -12,6 +12,22 @@ static inline std::vector<u8> read_file_binary(const std::string &path) {
     return {std::istreambuf_iterator{file}, {}};
 }
 
+static inline std::vector<u8> read_file_binary(const std::string &path, uint32_t size, uint32_t offset = 0) {
+    FILE *file = fopen(path.c_str(), "rb");
+    if (!file)
+        return {};
+
+    std::vector<u8> res;
+
+    fseek(file, offset, SEEK_SET);
+
+    res.resize(size);
+    fread(res.data(), 1, size, file);
+    fclose(file);
+
+    return res;
+}
+
 static inline void write_file_binary(const std::vector<u8> &data, const std::string &path) {
     std::ofstream file(path, std::ios::binary);
     std::copy(data.begin(), data.end(), std::ostreambuf_iterator{file});