GitLab

* Support bigbench-hard json tasks using multiple_choice_grade

* Add support for greedy decoding in bigbench tasks

* move bigbench_resources to datasets

* rectify changes to rf.greedy_until w upstream

* make path to resource import reflect new location

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Co-authored-by: haileyschoelkopf <hailey.schoelkopf@yale.edu>

* Add `TextSynth` API