[Pallas] Add a cost estimator for Pallas/JAX functions. #24809
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Helps resolve the following issue, where invoking HLO's cost analysis triggers compilation which can OOM for larger inputs: #24539. This cost estimator uses only abstract evaluation which should work for all input sizes. PiperOrigin-RevId: 695415760
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[Pallas] Add a cost estimator for Pallas/JAX functions.
Helps resolve the following issue, where invoking HLO's cost analysis triggers compilation which can OOM for larger inputs: #24539. This cost estimator uses only abstract evaluation which should work for all input sizes.