g_set workload does not test for duplicate addition

[orajwade19]

G-Set workload doesn't test duplicate element additions

Description

While using the g_set workload, I noticed that the workload never attempts to add the same value twice. The current implementation uses a range construct that adds values sequentially (1, 2, 3, etc.):

maelstrom/src/maelstrom/workload/g_set.clj

Line 59 in 8263d1d

:generator (gen/mix [(->> (range) (map (fn [x] {:f :add, :value x})))

This might be a minor issue since Maelstrom is primarily used for building toy systems rather than production deployments. However, testing duplicate additions would still be valuable.