DynamoDB Initial Changes

[Lokesh1302]

Problem

• Users should be able to see the DynamoDB in the Explorer tab, it should list all the tables available.
• Should be able to refresh, and search the tables.
• When clicked on a table, it should open the contents of the tables in a file.

Solution

Implemented the code for the above problem statement.

License

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[jpinkney-aws]

It looks like linting is failing. I think you can run npm run lintfix in the root of the repo and it should fix everything for you

[jpinkney-aws]

/retryBuilds