[Suggestion] ESI API Support

[EvilGrinUK]

CCP has developed a new API called ESI to (eventually) replace Crest and the XML API.

https://community.eveonline.com/news/dev-blogs/introducing-esi/

Interactive documentation is available at:

https://esi.tech.ccp.is/latest/

[nyrocron]

Certainly looks interesting and using it is probably a good idea.

[Maarten28]

Refer to #162