Adding better Baidu support

[mpodwysocki]

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• [x] Are tests passing locally?
• [x] Are the files formatted correctly?
• [x] Did you add unit tests?
• [x] Did you test your change with either the sample apps that are included in the repository or with a blank app that uses your change?

Description

Adds better support for Baidu by adding a getPnsHandle() method which returns the correct direct send handle. Also added support for Installations using Baidu.

Related PRs or issues

28

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