[#24061] New filter implementation

[Danipiza]

Description

This PR adds a filter by topic keys feature in Fast-DDS-Spy.

Added a new category to the filter, keys. The spy will only show the information that matches with the filter added by the user ("partitions" and "topic keys").

The new category is added with the same commands as the previous partition filter, BUT the filter_str variable will have the following format:

• <topic_key-name>:<topic_key-value>

Related PR: [#23594] Support "partitions" in DDS Recorder & Replayer

Contributor Checklist

• Commit messages follow the project guidelines.
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• Documentation tests pass locally.
• Applicable backports have been included in the description.

Reviewer Checklist

• The PR has a milestone assigned.
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• CI passes without warnings or errors.