Receives two columns with player names and returns a data frame with the relevant index columns based on a given lookup table
match_player_names_to_lookup_table(d, player0, player1, lookup_table)
a data frame
The name of the column of data data contains player0
The name of the column of data data contains player1
a lookup table data frame
A dataframe with the additional columns 'player0_index' and 'player1_index' that contains the indexes