optimum

ac951ca0 - ORTOptimizer for the model type Segformer (#1820)

ORTOptimizer for the model type Segformer (#1820) * add segformer * black * make format * decoder_hidden_size not a list * tests pass now * use max * use zero --------- Co-authored-by: Zach Deane-Mayer <zach@ai-insight-solutions.com>