Add scaffolding for new Route53 Resolver service

[ewbankkit]

Fixes #6525.
Minimal changes to enable new Route53 Resolver resources.
Includes aws-sdk-go additions from #6549.

Usage:

conn := meta.(*AWSClient).r53resolverconn
...
// In resource read:
if err := getTagsRoute53Resolver(conn, d, arn); err != nil {
    return err
}
...
// In resource update:
if err := setTagsRoute53Resolver(conn, d, arn); err != nil {
    return err
}

[ewbankkit]

Temporarily added // nolint comments to prevent errors:

$ make lint
==> Checking source code against linters...
aws/tagsRoute53Resolver.go:14:6:warning: func getTagsRoute53Resolver is unused (U1000) (unused)
aws/tagsRoute53Resolver.go:14:1:warning: getTagsRoute53Resolver is unused (deadcode)
aws/tagsRoute53Resolver.go:44:6:warning: func setTagsRoute53Resolver is unused (U1000) (unused)
aws/tagsRoute53Resolver.go:44:1:warning: setTagsRoute53Resolver is unused (deadcode)
GNUmakefile:34: recipe for target 'lint' failed
make: *** [lint] Error 1

These should be removed once we have code using these functions,

[ewbankkit]

I'm going to close this one as the relevant commit is included in #6571 and #6574.

[ghost]

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.

If you feel this issue should be reopened, we encourage creating a new issue linking back to this one for added context. Thanks!