add usbds speed / max packet detection, add zlt support for usbds, fix game usb transfer bug (see below).

due to the previous commit, i broke dumping multiple games via usb as the stream offset wasn't reset.
because of this, the first transfer would complete, but the 2nd one would fail.

sphaira/source/yati/source/usb.cpp

@@ -80,6 +80,7 @@ Result Usb::SendFileRangeCmd(u64 off, u64 size, u64 timeout) {
 }
 
 Result Usb::Finished(u64 timeout) {
+    log_write("[USB] sending finished command\n");
     return SendCmdHeader(tinfoil::USBCmdId::EXIT, 0, timeout);
 }