if present they take precedence on core config when SDES is negociated

Comment asserts about microphone state. There is no reason that it is preserved from one call to another. Use linphone_core_enable_mic() for this.

Do not set session for remote participants
Keep same settings between referred call and original call

- behaviour when server crash when device abruptly loses connection to the conference
- simultaneous video toggle
- conference creation without proxy config

Add keyword const to setWindowId for a participant
Rework participant joined/left callback. It will be sent at the same time as conference joined/left is sent.
Added participant device is speaking listener on conference

Try to load the friendlist from the core when booting up, in case it was already there
Add missing accountContact methods in FlexiAPIClient
Fix cbs callbacks in tests

remove conference_ogl_render as it is only used by MSOGL and MSOGL is not needed.  Move set_display_mode to ms2

- clients send a reINVITE with the desired stream based on their choice of layout upon reception of:
  - full notify state
  - participant added
  - participant removed
- change of layout (via conference params update or setLayout method) triggers a reINVITE from the client with the new desired streams
- server sends reINVITEs to clients only to notify them that they joined a conference. If the client calls a conference URI, no reINVITE from the server is sent

Add conference available media changed callback
Conference layout renaming: None -> Legacy
Add linphone_core_create_conference_params_2 in order to create conference parameters from an existing set
Split local conference tester to speed up test run
Rename testers Audio Conference (Basic) -> Audio Video Conference (Basic) and Audio Conference (Advanced) -> Audio Conference
Add media direction to string function

-fonction make_routes_for_account compares domain identity instead of proxy server domain for transport selection.
-fix message testers

Keep same subject and content when deferring start of call to gather ICE candidates

Clear manually directly in the SQLite DB the corresponding friendlists and fully resync the DB in memory afterward
Complete the flexiapi_remote_provisioning_contacts_list_flow test to test the database full reload
Split some warnings to have more precise logs in debug
Return the number of synced friendslists from linphone_core_friends_storage_resync_friends_lists
Check if mainDB is available before trying to import the friends database when setting the file path

Fix potential leak of notification observer that could lead to crash. Fix assert in shared_executor_core_get_message_with_user_defaults_multi_thread

Add an option to assume that RTP bundle is supported by other clients, allowing an optimization by drastically reducing the number of gathered candidates.