Changed way ETA is calcualted.

[KyleF0X]

Changed the ETA function in seed recovery so its calculated by MATH, not COUNTING, which can take hours/days. This way the user doesnt have to use --no-eta, and lose their ability to have an ETA, but doesnt have to waste time counting the number of permutations.

[3rdIteration]

This is very useful for basic tokenlists, but this doesn't take arguments, wildcards or anchors into consideration. (So should check if any of these are present and fall-back to manual generation method for these)