change extra_tags to cloudflare_tags

Changed (breaking)

• change extra_tags to cloudflare_tags so empty tag list is possible

Added `ses_domain_identity_arn` output

Added

• Added ses_domain_identity_arn output

Policy adjustment

Changed

• Added ses:sendEmail permission
• Restricted Resource to the created domain identity

prototype release

Merge pull request #1 from silinternational/develop

Release 0.0.1 -- first prototype