Add initial project structure and files

src/main.c

@@ -0,0 +1,14 @@
+#include <stdio.h>
+
+int main(int argc, char *argv[]) {
+  printf("KVStore - Key-Value Store\n");
+
+  if (argc > 1) {
+    printf("Number of arguments: %d\n", argc - 1);
+    for (int i = 1; i < argc; i++) {
+      printf("Argument %d: %s\n", i, argv[i]);
+    }
+  }
+
+  return 0;
+}

src/string.c

@@ -0,0 +1,11 @@
+#include <stdlib.h>
+
+char *string_copy(const char *src) { return NULL; }
+
+int string_compare(const char *str1, const char *str2) { return -1; }
+
+char *string_trim(const char *str) { return NULL; }
+
+int string_search(const char *src, const char *search) { return -1; }
+
+void string_free(const char *str) {}