Add Azure Pipelines (#3140)

* Adding ci files

* Single pipeline

* Add test reporting

* Try adding mocha-junit-reporter

* More complete test reporting

* Cleaning up

* Trying to find location of test file

* Added searching logic to wrong file

* Trying different method of getting test results

* Add reporter option

* Adding alternate way of getting mac os

* Get rid of bad comments

azure-pipelines.yml

@@ -0,0 +1,29 @@
+trigger:
+- master
+- releases/*
+
+jobs:
+
+# All tasks on Windows
+- job: build_all_windows
+  displayName: Build all tasks (Windows)
+  pool:
+    vmImage: vs2017-win2016
+  steps:
+  - template: azure-pipelines-windows.yml
+
+# All tasks on Linux
+- job: build_all_linux
+  displayName: Build all tasks (Linux)
+  pool:
+    vmImage: 'Ubuntu 16.04'
+  steps:
+  - template: azure-pipelines-linux-mac.yml
+
+# All tasks on macOS
+- job: build_all_darwin
+  displayName: Build all tasks (macOS)
+  pool:
+    vmImage: macos-10.13
+  steps:
+  - template: azure-pipelines-linux-mac.yml