Switch to libarchive and camera autodetect between splashes and themes (#142)

* switch to libarchive and get rid of minizip, introduce zip_memory_to_buf

* automatically detect whether the downloaded zip is a splash or a theme

* slightly simpler way

source/main.c

@@ -385,7 +385,7 @@ int main(void)
                     ACU_GetWifiStatus(&out);
                     if(out)
                     {
-                        if(init_qr(current_mode))
+                        if(init_qr())
                         {
                             load_lists(lists);
                         }