reliant on work in: #6097

Problem

There is a lot of duplicate code across the sdk clients. Additionally, we want to only construct the clients once (per wrapper), and have these clients call destroy.

Solution

• rename clients to wrappers to avoid confusion between our clients and sdk clients.
• create abstract class to minimize code dupe.
• cache sdk clients on creation within the wrappers.
• migrate ssm client to sdkv3, using new common wrapper class.

TODO: undo local changes to streaming client, generate client with more recent dependencies.

• Treat all work as PUBLIC. Private feature/x branches will not be squash-merged at release time.
• Your code changes must meet the guidelines in CONTRIBUTING.md.

License: I confirm that my contribution is made under the terms of the Apache 2.0 license.