Fix building for Xcode 15 and 16

[buggmagnet]

This PR makes building both with Xcode 15 and Xcode 16 possible.

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This change is 

[linear]

IOS-902 Test out Xcode 16.1RC

[rablador]

Reviewed 18 of 18 files at r1, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved

[rablador]

Reviewable status: complete! all files reviewed, all discussions resolved

[pinkisemils]

Can I have a patch here without the workaround for the optimizer? I'll try it out on Xcode 16.2 beta.

[buggmagnet]

@pinkisemils All the changes in the PR are to work around the optimiser crashing when we build the MockRelease scheme
As long as you stick to Debug the code will build and run normally.

Reviewable status: complete! all files reviewed, all discussions resolved

[mojganii]

Reviewable status: all files reviewed, 1 unresolved discussion (waiting on @buggmagnet)

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ios/MullvadVPN/TunnelManager/UIApplication+Extensions.swift line 2 at r1 (raw file):

//
//  UIApplication+Extensions.swift

since the it's not extension anymore, I suppose we have to rename the file name and it's location.

[pinkisemils]

Breaks all the same on the 16.2 beta 😿 Probably works with these changes too.

[buggmagnet]

Reviewable status: 16 of 19 files reviewed, 1 unresolved discussion (waiting on @mojganii and @rablador)

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ios/MullvadVPN/TunnelManager/UIApplication+Extensions.swift line 2 at r1 (raw file):

Previously, mojganii wrote…

since the it's not extension anymore, I suppose we have to rename the file name and it's location.

Done.

[rablador]

Reviewed 3 of 3 files at r2, all commit messages.
Reviewable status: all files reviewed, 1 unresolved discussion (waiting on @mojganii)

[mojganii]

Reviewable status: complete! all files reviewed, all discussions resolved