Fix Swiftlint warnings in RootContainerViewController · mullvad/mullvadvpn-app@4ecd728

Function body should span 50 lines or less excluding comments and whitespace: currently spans 53 lines (function_body_length)

Function body should span 50 lines or less excluding comments and whitespace: currently spans 54 lines (function_body_length)

File should contain 400 lines or less: currently contains 403 (file_length)

Function should have complexity 10 or less; currently complexity is 16 (cyclomatic_complexity)

Function body should span 50 lines or less excluding comments and whitespace: currently spans 70 lines (function_body_length)

Function body should span 50 lines or less excluding comments and whitespace: currently spans 68 lines (function_body_length)

Function body should span 50 lines or less excluding comments and whitespace: currently spans 57 lines (function_body_length)

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