Add estimation to the funding flow

[clicksave]

Players should know how far their money will take them. When they are selecting the amount of credits to buy or the amount of ETH to deposit we should show them the number of games this buys.

Should update dynamically if they select a different amount or put in a custom amount

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https://www.figma.com/design/OSbzNkyR9UYV4Erz9oF9JJ/Controller?node-id=6638-15229&t=b8uRkMXcOpYzcxl6-1