feat: add support for region (Enhanced Region Support)

- added `region` input variable
- updated docs

Author: nightspotlight

README.md

@@ -579,6 +579,7 @@ No modules.
 | <a name="input_redshift_subnet_suffix"></a> [redshift\_subnet\_suffix](#input\_redshift\_subnet\_suffix) | Suffix to append to redshift subnets name | `string` | `"redshift"` | no |
 | <a name="input_redshift_subnet_tags"></a> [redshift\_subnet\_tags](#input\_redshift\_subnet\_tags) | Additional tags for the redshift subnets | `map(string)` | `{}` | no |
 | <a name="input_redshift_subnets"></a> [redshift\_subnets](#input\_redshift\_subnets) | A list of redshift subnets inside the VPC | `list(string)` | `[]` | no |
+| <a name="input_region"></a> [region](#input\_region) | Region where the resource(s) will be managed. Defaults to the region set in the provider configuration | `string` | `null` | no |
 | <a name="input_reuse_nat_ips"></a> [reuse\_nat\_ips](#input\_reuse\_nat\_ips) | Should be true if you don't want EIPs to be created for your NAT Gateways and will instead pass them in via the 'external\_nat\_ip\_ids' variable | `bool` | `false` | no |
 | <a name="input_secondary_cidr_blocks"></a> [secondary\_cidr\_blocks](#input\_secondary\_cidr\_blocks) | List of secondary CIDR blocks to associate with the VPC to extend the IP Address pool | `list(string)` | `[]` | no |
 | <a name="input_single_nat_gateway"></a> [single\_nat\_gateway](#input\_single\_nat\_gateway) | Should be true if you want to provision a single shared NAT Gateway across all of your private networks | `bool` | `false` | no |