Add waf-runtime package

[nateweller]

Fixes #

Proposed changes:

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Testing instructions:

• Go to '..'

[github-actions]

Are you an Automattician? The PR will need to be tested on WordPress.com. This comment will be updated with testing instructions as soon the build is complete.

[github-actions]

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🔴 Action required: Please add missing changelog entries for the following projects: projects/packages/waf

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