Add option to just add record

Add option that you can just specify array of records that will be added in cloudflare zone for the subdomain so you don't need DNS hosting.
Like
example: [{"CNAME": "google.com"}]

CNAME, A, AAAA, TXT, MX , etc. records should be available.

I think this is a good idea. However managing records directly here means there will be a greater need for modifications and this can't be done until #30 is solved.