net/ntimed: Add rc startup script

- Add ntimed rc script
- Tweak GH_PROJECT, remove WRKSRC override accordingly
- Remove trailing newline (portlint)

Approved by:	maintainer


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@375206 35697150-7ecd-e111-bb59-0022644237b5