feat: path API

[dsherret]

To add in the future:

• components(): Iterator
• startsWith(text: string): boolean;
• endsWith(text: string): boolean;
• link / linkSync

Closes #94

[sigmaSd]

I implemented before some of the apis that you still have todo on https://github.com/sigmaSd/Path/blob/master/path.ts

Maybe you can find something useful there

[dsherret]

@sigmaSd neat! I also wanted something for file system manipulation. We might actually move this into deno_std in the future.

[sigmaSd]

That would be 🆒 , I guess dax is a chance to test the api first