fix(hydra-cli): ignore generating module import for self referenced e…

[metmirr]

It fixes module imports for self relationships.
Example:

type Member @entity {
  invitor: Member
  invitees: [Member!] @derivedFrom(field: "invitor")
}

The generated member/member.model.ts will have a module import statement like this import {} from '../member/member.model.ts' which is incorrect.

affects: @dzlzv/hydra-cli

[dzhelezov]

What's the issue it is fixing? Perhaps we can add a test?