Add ability to set exposure percentages to players when creating optimized line-ups

[lostless13]

When creating line-ups people want to set % exposure to players.

One possible implementation: Have a column on "My Team" sheet where players can set exposure % to a given player. Map % exposure to all players page When running optimizer update a column for % exposure to the given player given the number of iterations. Add a constraint to opensolver that % exposure must be <= to set exposure.

Could also simplify the eliminate a player by using this constraint to effectively eliminate players from the model by setting % exposure to 0.

[scipio314]

This feature has been added in version 1.7