Add track and application information to monitoring data

[defagos]

Description

This PR updates our monitoring implementation to add audio / subtitles track information as well as application information ti metrics.

For more information see related issue.

Changes made

Self-explanatory.

Checklist

• APIs have been properly documented (if relevant).
• The documentation has been updated (if relevant).
• New unit tests have been written (if relevant).
• The demo has been updated (if relevant).