Adds Sign in with Apple (#1475)

* Adds Sign in with Apple button to login view

* Adds initial Apple sign in logic

* Removes unused protocols

* Registers Apple auth delegate

* Main use thread on callback

* Adds Apple icons
Adds usage information for convert_images.rb script

* Adds tests for Apple login method

* Tweaks

* Cleans up ParseUI dependencies

* Enables tests of 'Sign in with Apple' logic in CI

* Removes 'Frameworks' folder from workspace root

It was the cause of the stack of warnings that came with every build.

* Removes tests from Cocoapods output

* Fixes naming

* Removes my dev team from signing

* Update cocoapods to 1.9.3 and travis to XCode 11.6

* Revert "Update cocoapods to 1.9.3 and travis to XCode 11.6"

This reverts commit 50a5390.

* Removes comments

Co-authored-by: Nathan Kellert <nathankellert@gmail.com>

Author: drdaz

Parse.podspec

@@ -155,7 +155,7 @@ Pod::Spec.new do |s|
     s.requires_arc          = true
     s.ios.deployment_target = '8.0'
     s.source_files        = 'ParseUI/**/*.{h,m}'
-    s.exclude_files = 'ParseUI/ParseUIDemo/**/*', 'ParseUI/Other/ParseUI.h'
+    s.exclude_files = 'ParseUI/ParseUIDemo/**/*', 'ParseUI/Other/ParseUI.h', 'ParseUI/SignInWithAppleTests/'
     s.public_header_files = 'ParseUI/Classes/LogInViewController/*.h',
                             'ParseUI/Classes/SignUpViewController/*.h',
                             'ParseUI/Classes/QueryTableViewController/*.h',

Parse.xcworkspace/contents.xcworkspacedata

@@ -6,5 +6,7 @@
 	<string>Latest</string>
 	<key>IDEWorkspaceSharedSettings_AutocreateContextsIfNeeded</key>
 	<false/>
+	<key>PreviewsEnabled</key>
+	<false/>
 </dict>
 </plist>

Parse.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1120"
+   LastUpgradeVersion = "1130"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"

Parse/Parse.xcodeproj/xcshareddata/xcschemes/Parse-iOS-Dynamic.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1120"
+   LastUpgradeVersion = "1130"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"

Parse/Parse.xcodeproj/xcshareddata/xcschemes/Parse-iOS.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1120"
+   LastUpgradeVersion = "1130"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"

Parse/Parse.xcodeproj/xcshareddata/xcschemes/Parse-macOS.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1120"
+   LastUpgradeVersion = "1130"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"

Parse/Parse.xcodeproj/xcshareddata/xcschemes/Parse-tvOS-Dynamic.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1120"
+   LastUpgradeVersion = "1130"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"

Parse/Parse.xcodeproj/xcshareddata/xcschemes/Parse-tvOS.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1120"
+   LastUpgradeVersion = "1130"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"

Parse/Parse.xcodeproj/xcshareddata/xcschemes/Parse-watchOS-Dynamic.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1120"
+   LastUpgradeVersion = "1130"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"