Add Microsoft Authentication helper for macOS

.gitignore

@@ -331,3 +331,7 @@ ASALocalRun/
 
 # macOS Finder files
 .DS_Store
+
+# GCM build output
+out/
+

build/templates/build-and-test.macos.yml

@@ -21,3 +21,26 @@ steps:
     publishTestResults: true
     #testRunTitle: 'Common unit tests (macOS)' # option not yet available
     continueOnError: true
+
+- task: CocoaPods@0
+  displayName: Install CocoaPods for Microsoft Authentication helper
+  inputs:
+    projectDirectory: 'macos/Microsoft.Authentication.Helper'
+
+- task: Xcode@5
+  displayName: Compile Microsoft Authentication helper
+  inputs:
+    xcWorkspacePath: 'macos/Microsoft.Authentication.Helper/Microsoft.Authentication.Helper.xcworkspace'
+    configuration: $(configuration)
+    scheme: 'Microsoft.Authentication.Helper'
+    sdk: macosx
+
+- script: 'macos/installer/build-installer.sh --configuration=$(configuration) --version=1.0'
+  displayName: Build installer package
+  failOnStderr: true
+
+- task: PublishPipelineArtifact@0
+  displayName: Publish installer package
+  inputs:
+    artifactName: 'macOS Installer'
+    targetPath: 'out/macos/installer/'

macos/.gitignore

@@ -0,0 +1,66 @@
+# Xcode
+#
+# gitignore contributors: remember to update Global/Xcode.gitignore, Objective-C.gitignore & Swift.gitignore
+
+## Build generated
+build/
+DerivedData/
+
+## Various settings
+*.pbxuser
+!default.pbxuser
+*.mode1v3
+!default.mode1v3
+*.mode2v3
+!default.mode2v3
+*.perspectivev3
+!default.perspectivev3
+xcuserdata/
+
+## Other
+*.moved-aside
+*.xccheckout
+*.xcscmblueprint
+
+## Obj-C/Swift specific
+*.hmap
+*.ipa
+*.dSYM.zip
+*.dSYM
+
+# CocoaPods
+#
+# We recommend against adding the Pods directory to your .gitignore. However
+# you should judge for yourself, the pros and cons are mentioned at:
+# https://guides.cocoapods.org/using/using-cocoapods.html#should-i-check-the-pods-directory-into-source-control
+#
+Pods/
+#
+# Add this line if you want to avoid checking in source code from the Xcode workspace
+# *.xcworkspace
+
+# Carthage
+#
+# Add this line if you want to avoid checking in source code from Carthage dependencies.
+# Carthage/Checkouts
+
+Carthage/Build
+
+# fastlane
+#
+# It is recommended to not store the screenshots in the git repo. Instead, use fastlane to re-generate the
+# screenshots whenever they are needed.
+# For more information about the recommended setup visit:
+# https://docs.fastlane.tools/best-practices/source-control/#source-control
+
+fastlane/report.xml
+fastlane/Preview.html
+fastlane/screenshots/**/*.png
+fastlane/test_output
+
+# Code Injection
+#
+# After new code Injection tools there's a generated folder /iOSInjectionProject
+# https://github.com/johnno1962/injectionforxcode
+
+iOSInjectionProject/