feat: add (iroh) --relay-url param to cli

[rustonbsd]

Thanks to @niyumard for suggesting this feature #21

• add param to clap
• fix windows compile error
• add --relay-url impl
• add --dns-resolve impl
• add --dns-publish impl
• add custom iroh-relay test
• version bump + cratesio publish

[rustonbsd]

without dns this doesn't work without internet access. added dns server config as todo before merge