Add a configuration option for fullscreen locking

Some people are annoyed to have this new behaviour forced for some
application which use fake fullscreen.

clients now works as expected in drag motion

implement drag and drop

For brevity, only a single drag icon at a time is supported.

Co-authored-by: Leonardo Hernández Hernández <leohdz172@protonmail.com>

only skip frames if there are visible clients that have a resize

remove a useless resize in mapnotify()

applyrules() calls setmon() which calls resize()

destroy scene_output in cleanupmon()

Merge pull request #204 from djpohly/scenegraph3

merge scenegraph3

remove independents list

remove unneeded variables

attach presentation to scene

Merge branch 'main' into scenegraph

do not allow set client size less than its min size

make sure to destroy wlr_scene_node of unmanaged clients

do not create borders for unmanaged clients

pointerfocus: only use provided surface

if a client is given focus it

use xdg_shell helper

for xwayland continue using wlr_scene_subsurface_create()

get old client by surface's node

fix crash of Firefox when opening a popup larger than its size

constraint popups to its parent client

Closes: #146
Closes: #155

Merge branch 'main' into scenegraph