Returns a mutable builder for constructing an instance of [PromptimConfig].
public Unit builder()Returns a mutable builder for constructing an instance of [PromptimConfig]. The following fields are required:
.autoCommit()
.datasetName()
.devSplit()
.evaluators()
.messageIndex()
.numEpochs()
.taskDescription()
.testSplit()
.trainSplit()