Add IETP multimedia embedding with responsive video, audio, and interactive images#159

Copilot wants to merge 4 commits intocopilot/fix-cbfd652f-6179-4a6b-9443-2c01acced28eAmedeoPelliccia/ASI-T2:copilot/fix-cbfd652f-6179-4a6b-9443-2c01acced28efrom

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