[cytoscape] adds warnings function definition (#41139)
[cytoscape] adds warnings function definition (#41139)

* Adds Cytoscape.warnings definition

* Adds contribution link

georgemarshall/DefinitelyTyped,dsebastien/DefinitelyTyped,dsebastien/DefinitelyTyped,georgemarshall/DefinitelyTyped,georgemarshall/DefinitelyTyped,georgemarshall/DefinitelyTyped,mcliment/DefinitelyTyped,markogresak/DefinitelyTyped