CATTY-369 Implement place visually feature

[mstoeg]

(https://jira.catrob.at/browse/CATTY-369)

• Refactor PlaceAtBrick, PlaceAtBrick+CBXMLHandler, GlideToBrick, GlideToBrick+CBXMLHandler to Swift
• add functionality to XCTTestCaseExtension to directly tap on a brick or on a brick cell

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[wallisch]

And rebase to develop please, then we're done IMO

[wallisch]

Some issues:

• When placing the moles in the demo project, sometimes the app crashes on "place visually"
• When the project has never been started, the scene background is empty
• IF the scene background is there on the demo project (after starting once), the previous position of the look is not displayed (layer error?)

Additionally, i would tint the status bar with light color mode (white) on the "place visually" screen

[mstoeg]

Thank you, I fixed the requested changes.

Concerning the navigation bar: I deliberately made it transparent, because if someone is creating a fullscreen app and wants to visually place an object at the top of the screen it would not be possible as the top area would be obscured by the navigation bar.

[wallisch]

I rebased and also made some small changes:

• Fixed storyboard error
• System status bar is now white instead of black
• Layout/spacing/font adjustments in the storyboard
• Better pocketcode logo image for empty looks

I think we're good to go now.

[m-herold]

Very nice PR, thanks @mstoeg!

While this feature works perfectly for objects without any transformation, the place visually feature is misleading/does not apply transformations when an object is

• Turned left/right
• Pointed in a certain direction
• Changed its look

It however works fine when changing an object's size. In Catroid it seems that the last visible appearance is being cached and reused when using the place visually feature. Could we do the same for Catty?

Finally, this feature does not work for landscape mode. In case landscape mode needs a significant amount of rework, I am more than happy to implement the place visually feature for landscape mode in a separate ticket while merging this already (after the previously mentioned bugs have been implemented).