enhancement: support zone association

[xshot9011]

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What 😗

Added

• Add variable var.is_ignore_vpc_changes to decide which host zone to use
  • Add resource aws_route53_zone.this_ignore_vpc for integration with private zone route association
• Add local variables local.zone_name using at outputs.tf

Changed

• Move all locals into main.tf
• Move usage in README to examples/simple folder
• Update local.zone_id condition when use with variables var.is_ignore_vpc_changes
• Output result support multiple resource creation

Why 🥺

• To prevent the deletion of associated VPCs after the initial creation

Other Info-