work on moving shader loading/compilation to a separate file

src/util.cpp

@@ -0,0 +1,23 @@
+#include <cstdio>
+#include <stdlib.h>
+
+#include "util.hpp"
+
+bool read_file(Array<char>* out, const char* filepath) {
+    FILE* fp = NULL;
+    if (fopen_s(&fp, filepath, "r") != 0) {
+        printf("ERROR Failed to open file %s\n", filepath);
+        return false;
+    }
+
+    fseek(fp, 0L, SEEK_END);
+    size_t sz = ftell(fp);
+    fseek(fp, 0L, 0L);
+
+    char *data = (char*)malloc(sizeof(char)*sz);
+    fread(data, sizeof(char), sz, fp);
+    fclose(fp);
+    out->_data = data;
+    out->len = sz;
+    return true;
+}