Check for null monitor in resize function

fix: disabled monitor no tagsset

hotfix: do not lose focus on tags moving between monitors

fix: attachclients in applyrules

Merge branch 'patch/singletagset' into v0.6-a/patched-base

fix: attach client to different monitor for tagrules

fix: singletagset unexpectedly changed selmon

When viewing tag that was previously on another monitor,
and the current monitor was empty, this lead to selmon
being changed, since focusclient(focustop(origm), 1) cannot
change the monitor in this scenario

Fix tagnthmon null client

Merge branch 'patch/singletagset-pertag' into v0.6-a/patched-base

Apply pertag to work with singletagset

fix: singletagset unexpectedly changed selmon

When viewing tag that was previously on another monitor,
and the current monitor was empty, this lead to selmon
being changed, since focusclient(focustop(origm), 1) cannot
change the monitor in this scenario

Apply accessnthmon-movecursor patch

Merge branch 'patch/keyboard-shortcuts-inhibit' into v0.6-a/patched-base

feat: apply keyboard shortcuts inhibit patch

Merge branch 'main' into v0.6-a/patched-base

Merge branch 'patch/singletagset-sticky' into v0.6-a/patched-base

fix: make sure sticky stays on same monitor until moved explicitely

Merge branch 'patch/sticky' into patch/singletagset-sticky

fix: correct behavior with other patches that change VISIBLEON

This fixes problems with patches like istticky,
where the sticky window would be visible on every monitor.
It's not. It should be visible only on its monitor.
SVIBISLBEON should always be adapted with those patches.
It's used just for singletagset when looking where a window
should be visible

Merge branch 'patch/singletagset' into v0.6-a/patched-base