Add GraphQL API to show aliases created by the current user

[short-d]

Add GraphQL API to show aliases created by the current user

[obukhov]

Can I take this?

[dawntomm]

Can i take this ?

[magicoder10]

@obukhov Surely! Please feel free to do any clean up or refactor based on the best practices if you want.

[magicoder10]

@obukhov Please join this Slack channel to discuss bugs, dev environment setup, tooling, and coding best practices.

[princejha95]

Looks interesting issue to me. Can i take this ?

[kapillamba4]

type Retriever interface {
	GetURL(alias string, expiringAt *time.Time) (entity.URL, error)
	GetURLsByUser(user entity.User) ([]entity.URL, error)
}

GraphQL Schema:

type AuthQuery {
	URL(alias: String!, expireAfter: Time): URL
	changeLog: ChangeLog!
	listURLs: [URL!]!
}

@byliuyang
@alldroll