Re-export SmithyWaitersAPI types

[shepazon]

Describe the feature

Like we did with the Smithy-related credentials providers, re-export the types associated with waiters to remove the need to directly import the Smithy module.

Use Case

Reducing the need for developers to know anything about Smithy is aa good thing. Smithy should be behind-the-scenes.

Proposed Solution

No response

Other Information

No response

Acknowledgements

• I may be able to implement this feature request
• This feature might incur a breaking change

[sichanyoo]

Go through types in SmithyWaitersAPI module and for types that AWS SDK customers would likely interact with, put typealias for them with the same name in AWSClientRuntime.

[shepazon]

Once this change is made, please try to ping me on Slack so I know to update the example to use the aliases instead of going to Smithy for these.