chat: image attachments collection, first draft: when more than one image is attached in a message, they are collected and a dedicated attachment item is shown. Opening this item will launch the carousel with all collected images.

[DEFAULT]
bridge = pb
log_level = debug
log_fmt = #[%%(levelname)s][%%(name)s] %%(message)s

[cagou]
no_certificate_validation = true
log_level = debug
log_fmt = [%%(levelname)s][%%(name)s] %%(message)s