Respond to disco#info on MUC JIDs

Otherwise, some client won’t do MAM, since they don’t know biboumi supports
it.

Add a missing “pass by reference”

Refactoring louloulibs and cmake

Use OBJECT libraries
Remove the louloulibs directory
Write FOUND variables in the cache

Pass the shared_ptr by reference, to avoid useless copies

Fix the order of from and to address in muc traffic info reply

And add a test for it.

fix #3238

Fix the previous commit

fix #3231

Do not send a not-connected error, on "unavailable" presences

fix #3231

Fix some issues found by sonar cube

Send iq error/result when the user changed a MODE command  with an iq

And add tests for all the mode changes

Introduce a XmlSubNode class that automatically adds itself into its parent

Remove a line from a WIP that should not have been added

Do not send an “not-implemented” error when receiving an iq error

Auto accept presence subscription

Do not change the nick when joining a second room with a different nick

As the doc says, the nick changes must be explicit in an already joined
room, and not when joining a room.

Avoid a potential nullptr dereference

Support the ident protocol

fix #3211

Remove a never reached (and non-sensical) error

Trivial refactor of get_user_bridge function

Add get-irc-connection-info adhoc command

fix #3171

Handle forced-join by just sending an invitation

fix #3116