complete api of graphs implemented in javascript

[AlisinaDevelo]

Greetings,
Firstly thank you for the amazing content and videos, I have made an implementation of the graph class in JS, implementing the following:

• adding and removing edges and vertexes to the graph
• depth first search
• breadth first search
• connected, cyclic, weighted, simple, complete, direct and indirect graphs
• checking if the graph has a loop or a path
  I am submitting this pull request including the aforementioned implementation
  thank you

[AlisinaDevelo]

Hi, checking back on this graph API contribution. If the project is still active and this implementation is useful, I’m happy to update it against the current branch and add focused tests. If priorities have moved, no worries; I just wanted to make sure the contribution did not get lost.