* add CuGraphGATConv model
* lintrunner
* update model to reflect changes in make_mfg_csr(), move max_in_degree to forward()
* simplify pytest markers
* fall back to FG option for large fanout
* update error msg
* add feat_drop and activation options
* add residual option
* Update python/dgl/nn/pytorch/conv/cugraph_gatconv.py
Co-authored-by: Mufei Li <mufeili1996@gmail.com>
* Update python/dgl/nn/pytorch/conv/cugraph_gatconv.py
Co-authored-by: Mufei Li <mufeili1996@gmail.com>
* reset res_fc
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Co-authored-by: Mufei Li <mufeili1996@gmail.com>