GNN Implementation

RegMs If 6d47c6efaa fix: update sample number %!s(int64=3) %!d(string=hai) anos
cora a369eeda23 initial commit %!s(int64=3) %!d(string=hai) anos
gnn.go 6d47c6efaa fix: update sample number %!s(int64=3) %!d(string=hai) anos
go.mod a369eeda23 initial commit %!s(int64=3) %!d(string=hai) anos
graph.go 0c20b14336 feat: add parallelism %!s(int64=3) %!d(string=hai) anos
main.go 6d47c6efaa fix: update sample number %!s(int64=3) %!d(string=hai) anos
matrix.go 0e85412ab0 feat: add random walk sampling %!s(int64=3) %!d(string=hai) anos
test.out 6d47c6efaa fix: update sample number %!s(int64=3) %!d(string=hai) anos
vector.go e601c41345 feat: add GAT method %!s(int64=3) %!d(string=hai) anos