add match times where available

[JeffSackmann]

ultimately i'd like to add match times for older matches -- it's the statistic most frequently mentioned in contemporary press coverage. It'll be a motley mix of matches as I only occasionally remember to jot them down, but I'll keep a running list here and then add to the dataset in batches.

92 wimb seles-graf 58 minutes
92 rg seles-graf 2h43
90 vs chps final seles-sabatini 3h47
95 canada seles-coetzer 0h51
23 usn final wills-mallory 0h33
24 wimb wills-mckane 1h15
24 usn wills-molla 0h35
25 lenglen-fry 0h26
25 brookline wills-fuller 19m
25 seabr wills-ryan 40m
27 beck wills vs tapscott 18m, molla 23m
27 manch, wills d. jacobs in 34 minutes
31 manch wills-harper 30m
31 seabright wills-jacos 32m
31 usn wills-bennett, 34m
73 fort laud r16 evert d gurdal 36m
75 vs chps evert d martina 66m

Buenos Aires $15K 1R: (4)Iamachkine (PER) d. González (ARG) 7-5 6-7 7-6 in 4h 46m
longest match of 2022: Samir defeating Tretenovic in Cairo in 4 hours and 54 minutes.