added cstring mostly

source/tart.c

@@ -131,6 +131,10 @@ tart_byte tart_add_cells_to_buffer(struct tart_buffer* buffer, struct tart_cell*
 struct tart_cstring tart_cstring(char *string, long size, struct tart_cell type){
     struct tart_cstring str = {0,size};
     str.data = malloc(size * sizeof(struct tart_cell));
+    for(int i = 0; i < size; i++) {
+        str.data[i] = type;
+        str.data[i].display = string[i];
+    }
     return str;
 }