Reserve holder may do refund immediately by issuing and redeeming a note

[kushti]

It is possible for a reserve holder to refund immediately by issuing a note and redeeming it.

After considering multiple options, I think the best one would be to introduce note counter token stored in reserve box, and mint action in reserve contract which is instantiating a note with note counter tokens. Approximate creation height to be written into a note box as well. This root note creation height is then passed through spending chains. Redemption is possible after refund period passed (since note creation).

And then we can relax note spending conditions, by not checking spendings history related conditions, thus allowing for offchain progression there.