Feature/flv media profile

[alex1712]

What is the current behavior you want to change?

Currently there is no way within the kurento media server to Stream via RTMP

What is the new behavior provided by this change?

Adds a new FLV Media Profile for the RecorderEndpoint which allows the user to stream via rtmp or save to disk as flv.

How has this been tested?

Tested recording a file in disk and playing after that and streaming via RTMP to Amazon IVS and a local RTMP server.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature / enhancement (non-breaking change which improves the project)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• My change requires a change to the documentation
• My change requires a change in other repository
  It requires changes in kms-elements to add the implementation of the media profile.

Checklist

• I have read the Contribution Guidelines
• I have added an explanation of what the changes do and why they should be included
• I have written new tests for the changes, as applicable, and have successfully run them locally

[jenkinskurento]

Hi there, thanks for your Pull Request!

A Kurento member needs to verify that this patch is reasonable to test. In case it is, they should write a comment with the phrase test this please. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by Kurento members will still work. Regular contributors can be whitelisted to skip this step.