[packaging] folder 'qtquickcontrols' will hold subtree instead

Signed-off-by: Simonas Leleiva <simonas.leleiva@jollamobile.com>
Squashed 'qtquickcontrols/' content from commit 6e42962

git-subtree-dir: qtquickcontrols
git-subtree-split: 6e42962551db34b9c6144040fb6c9de9029946a4
Merge commit 'cbfd050c1725a83daeb98686f0b435b2744b85ed' as 'qtquickcontrols'