Release Models of MogaNet and Update Features in V0.2.6

[Lupin1998]

Updateing new features:

1. Fix the classification heads and update implementations and config files of AlexNet and InceptionV3.

Uploading Benchmark Results (release):

1. Updating mixup benchmarks on ImageNet as provided in AutoMix and update results in Model_Zoo_sup.md.
2. Release pre-trained models and logs of MogaNet.

Updating documents:

1. Update documents of mixup benchmarks on ImageNet with new backbones in Model_Zoo_sup.md.
2. Update awesome lists in Awesome Mixups and Awesome MIM and provide teaser figures of most papers as illustrations.

[Lupin1998]

We will refactor the implementation of mixup augmentations and upload pretrained models of mixup benchmarks in V.0.2.7.