Imrove animation on Corgi minting page

[zahhar]

There are 5 frames how Corgi is minted. Only 1 (last one) is used.

For more eye-candy look & feel we could do the following:

• display each animation for 1s (in total will be 5 s)
• if request to mint a Corgi finishes earlier → it waits until all animations will played
• if equest to mint a Corgi takes longer → user sees last frame that is played until corgi is minted in BE