This reverts commit 14be8a9e.

--simplify warnings and add formalt security checks

BUG:440759

--change also layout actions to radiobuttons

--consider start and end layouts only when the alignment
is set to Justify

--fix any crispy and blurry issues by moving
to Kirigami.Icon which maintainable and much
better for Latte requirements. For example
no roundToIconSize option is needed at all.
As it appears Kirigami.Icon is using only
the smooth parameter in order to define
its coloring.

BUG:432477

--this way we make sure that kirigami2 is installed
and afterwards we can easily check kde frameworks version
which needs to be >= 5.69 in order to support
ShadowedRectangle

--views can now specify their input area under X11 and
give valuable space to underlying windows

--implement things simpler by using the same
CoreTypes header file both for LatteCore.Types
import statement and App c++ implementation.
Let's leave in the future to decide if
a LibLatte is really necessary.

--use a more logical organization for types. LibLatte2
is split to become LatteCore library and Latte types
are now moved to application level. The Latte Types will
be split even more... Tasks-Only related types will
become Latte.Tasks types

BUG:420210

--introduce a new dependency for KIO, it works
really nice in order to open files in filemanager
and selecting them

--following plasma updates for tasktools in order
to drop the ksysguard dependency which is also
costly

--following plasma updates for tasktools in order
to drop the ksysguard dependency which is also
costly

This reverts commit 9c240680.

--full development version to distinguish it
for the stable branch v0.9.x