Dev fused functional

[MARD1NO]

增加 fused_bias_add_gelu 和 fused_bias_add_dropout

eager和静态图下有区分，暂不支持 fused_bias_add_dropout的 OptionalInput 后向优化

[github-actions]

CI failed, removing label automerge

[github-actions]

Speed stats:

GPU Name: GeForce GTX 1080 

PyTorch resnet50 time: 140.2ms (= 7009.6ms / 50, input_shape=[16, 3, 224, 224], backward is enabled)
OneFlow resnet50 time: 128.3ms (= 6416.8ms / 50, input_shape=[16, 3, 224, 224], backward is enabled)
Relative speed: 1.09 (= 140.2ms / 128.3ms)

PyTorch resnet50 time: 82.9ms (= 4145.0ms / 50, input_shape=[8, 3, 224, 224], backward is enabled)
OneFlow resnet50 time: 76.4ms (= 3819.1ms / 50, input_shape=[8, 3, 224, 224], backward is enabled)
Relative speed: 1.09 (= 82.9ms / 76.4ms)

PyTorch resnet50 time: 60.4ms (= 3018.3ms / 50, input_shape=[4, 3, 224, 224], backward is enabled)
OneFlow resnet50 time: 48.5ms (= 2425.2ms / 50, input_shape=[4, 3, 224, 224], backward is enabled)
Relative speed: 1.24 (= 60.4ms / 48.5ms)

PyTorch resnet50 time: 50.3ms (= 2515.4ms / 50, input_shape=[2, 3, 224, 224], backward is enabled)
OneFlow resnet50 time: 43.6ms (= 2182.4ms / 50, input_shape=[2, 3, 224, 224], backward is enabled)
Relative speed: 1.15 (= 50.3ms / 43.6ms)

PyTorch resnet50 time: 42.9ms (= 2146.5ms / 50, input_shape=[1, 3, 224, 224], backward is enabled)
OneFlow resnet50 time: 37.0ms (= 1852.1ms / 50, input_shape=[1, 3, 224, 224], backward is enabled)
Relative speed: 1.16 (= 42.9ms / 37.0ms)

[github-actions]

Speed stats:

GPU Name: GeForce GTX 1080 

PyTorch resnet50 time: 141.2ms (= 7059.9ms / 50, input_shape=[16, 3, 224, 224], backward is enabled)
OneFlow resnet50 time: 128.9ms (= 6443.6ms / 50, input_shape=[16, 3, 224, 224], backward is enabled)
Relative speed: 1.10 (= 141.2ms / 128.9ms)

PyTorch resnet50 time: 85.2ms (= 4262.0ms / 50, input_shape=[8, 3, 224, 224], backward is enabled)
OneFlow resnet50 time: 75.2ms (= 3761.5ms / 50, input_shape=[8, 3, 224, 224], backward is enabled)
Relative speed: 1.13 (= 85.2ms / 75.2ms)

PyTorch resnet50 time: 58.5ms (= 2926.5ms / 50, input_shape=[4, 3, 224, 224], backward is enabled)
OneFlow resnet50 time: 48.1ms (= 2406.8ms / 50, input_shape=[4, 3, 224, 224], backward is enabled)
Relative speed: 1.22 (= 58.5ms / 48.1ms)

PyTorch resnet50 time: 49.7ms (= 2486.6ms / 50, input_shape=[2, 3, 224, 224], backward is enabled)
OneFlow resnet50 time: 41.2ms (= 2059.1ms / 50, input_shape=[2, 3, 224, 224], backward is enabled)
Relative speed: 1.21 (= 49.7ms / 41.2ms)

PyTorch resnet50 time: 43.8ms (= 2190.0ms / 50, input_shape=[1, 3, 224, 224], backward is enabled)
OneFlow resnet50 time: 38.6ms (= 1931.8ms / 50, input_shape=[1, 3, 224, 224], backward is enabled)
Relative speed: 1.13 (= 43.8ms / 38.6ms)