[FEATURE] add SPs to find best upgrade

[zachanassian]

Link to issue

tu_optimize mydeck enemy -r -o -SP 300 climb 100000

=> use climb with ownedcards + any variation obtainable by spending 300 SP

[zachanassian]

WMT tyrant had upgardes for gold and code is already there in tu_optimize. Needs to be adjusted to TU logic.

However I do not need this feature. If you are free player at endgame level you hardly get a card worth maxing and if I do I add it to ownedcards.txt and see if it is used in any deck. if not it is not worth investing SP.

But i will keep it in the backlog. Maybe someone alse will pick it up.