Add UI for encrypted dns proxy

[mojganii]

This PR adds the UI part of the Encrypted DNS proxy to the default API access methods. An upcoming PR will connect the backend to the client side.

Before	After

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This change is 

[linear]

IOS-819 Add UI for encrypted DNS proxy

[pinkisemils]

Reviewed 15 of 15 files at r1.
Reviewable status: complete! all files reviewed, all discussions resolved

[rablador]

Reviewed 15 of 15 files at r1, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved

[rablador]

LGTM, but tests need fixing.

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

[mojganii]

Good catch!

Reviewable status: 14 of 16 files reviewed, all discussions resolved (waiting on @pinkisemils and @rablador)

[pinkisemils]

Reviewable status: 14 of 16 files reviewed, 1 unresolved discussion (waiting on @mojganii and @rablador)

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ios/MullvadVPNTests/MullvadSettings/APIAccessMethodsTests.swift line 35 at r2 (raw file):

        let storedMethods = repository.fetchAll()

        XCTAssertEqual(storedMethods.filter { $0.isEnabled && $0.kind.isPermanent }.count, 3)

We should still verify that it contains .direct, .bridges and .encryptedDns.

[rablador]

Reviewed 2 of 2 files at r2, all commit messages.
Reviewable status: all files reviewed, 1 unresolved discussion (waiting on @mojganii)

[pinkisemils]

Reviewed 2 of 2 files at r2, all commit messages.
Reviewable status: all files reviewed, 1 unresolved discussion (waiting on @mojganii)

[mojganii]

Reviewable status: 15 of 16 files reviewed, 1 unresolved discussion (waiting on @pinkisemils and @rablador)

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ios/MullvadVPNTests/MullvadSettings/APIAccessMethodsTests.swift line 35 at r2 (raw file):

Previously, pinkisemils (Emīls Piņķis) wrote…

We should still verify that it contains .direct, .bridges and .encryptedDns.

Done.

[buggmagnet]

Reviewed 14 of 15 files at r1, 1 of 2 files at r2, 1 of 1 files at r3, all commit messages.
Reviewable status: all files reviewed, 2 unresolved discussions (waiting on @mojganii and @pinkisemils)

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ios/MullvadSettings/AccessMethodRepositoryProtocol.swift line 47 at r1 (raw file):

    ///  Refreshes the storage with default values.
    func addDefaultsMethods()

Why did we rename this ? The previous name was quite explicit, and carried some explanation with it, I think we should revert this change.

[pinkisemils]

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

[github-actions]

🚨 End to end tests failed. Please check the failed workflow run.