feat: AWS SSM parameter store backend

[oujonny]

Description

Introduce AWS System Manager Parameter Store

Fixes: #466

Checklist

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• [x] Reviewed the guidelines for contributing to this repository
• [x] The commit message follows the Conventional Commits Guidelines.
• [x] Tests for the changes have been updated
• [x] Are you adding dependencies? If so, please run go mod tidy -compat=1.17 to ensure only the minimum is pulled in.
• [x] Docs have been added / updated
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Type of Change

• [ ] Bugfix
• [x] Feature
• [ ] Code style update (formatting, local variables)
• [ ] Refactoring (no functional changes, no api changes)
• [ ] New tests
• [ ] Build/CI related changes
• [ ] Documentation content changes
• [ ] Other (please describe)

Other information

[oujonny]

The story is ready from my side. Sadly I was not able to make it working that you can use the path and version annotations. Speifing a version is only possible currenlty with inline path. Maby someelse has an idea how to fix it.