LE Audio: Receiver start ready command shall only be sent by the receiver

[Thalley]

Describe the bug
The ASCS Receiver start ready opcode, trigger by bt_audio_stream_start, shall only be sent by the receiver, i.e. the client for source endpoints, and the server for sink endpoints. Furthermore, this should not sent automatically by the ASCS implementation as it is currently, but should be done by the upper layers when they are in fact, ready.

To Reproduce
N/A

Expected behavior
The the API will reject requests to start an endpoint that is not sending to the device sending the opcode.

Impact
Minor spec violation possible

Logs and console output
N/A

Environment (please complete the following information):

• Commit SHA or Version used: a5ce3da

Additional context
N/A

[github-actions]

This issue has been marked as stale because it has been open (more than) 60 days with no activity. Remove the stale label or add a comment saying that you would like to have the label removed otherwise this issue will automatically be closed in 14 days. Note, that you can always re-open a closed issue at any time.

[github-actions]

This issue has been marked as stale because it has been open (more than) 60 days with no activity. Remove the stale label or add a comment saying that you would like to have the label removed otherwise this issue will automatically be closed in 14 days. Note, that you can always re-open a closed issue at any time.