Add Build pipelines for OSX on Yamato (#13)

* Test repo config with a Hello world

* Add build OSX player job defs

* Add Build all job

* Remove useless utr arg

* Update commands

* Add log to artifacts and update command

* Update dependencies name in the build all job

* Remove unsupported unity version

* Remove useless lines

.yamato/build_test_player-OSX-Metal.yml

+editors:
+  - version: trunk
+  - version: 2021.1
+  - version: 2020.3
+os_versions:
+  - version: 10.14
+    type: Unity::metal::macmini
+    image: slough-ops/macos-10.14-xcode:stable
+    flavor: m1.mac
+  - version: 10.15
+    type: Unity::VM::osx
+    image: desktop/unity-macos-10.15-xcode-12.2:stable
+    flavor: m1.mac
+
+---
+
+{% for editor in editors %}
+{% for os_version in os_versions %}
+
+Build_Test_Player_OSX_{{os_version.version}}_{{ editor.version }}:
+  name: Build_Test_Player_OSX_{{os_version.version}} on version {{ editor.version }}
+  agent:
+    type: {{ os_version.type }}
+    image: {{ os_version.image }}
+    flavor: {{ os_version.flavor }}
+  commands:
+    - brew tap --force-auto-update unity/unity git@github.cds.internal.unity3d.com:unity/homebrew-unity.git
+    - brew install unity/unity/unity-downloader-cli
+    - unity-downloader-cli -u {{editor.version}} -c editor -c il2cpp  --wait --published-only
+    - .Editor/Unity.app/Contents/MacOS/Unity -batchmode -nographics -projectPath . -buildOSXUniversalPlayer player/player.app -logfile Unity.log -quit
+  artifacts:
+    player: 
+      paths:
+        - player/**
+    logs:
+      paths:
+        - Unity.log
+
+{% endfor %}
+{% endfor %}
+
+Build_All_Test_Players_OSX_Metal:
+  name: Build all test players OSX Metal
+  dependencies:
+  {% for editor in editors %}
+  {% for os_version in os_versions %}
+  - path: .yamato/build_test_player-OSX-Metal.yml#Build_Test_Player_OSX_{{os_version.version}}_{{ editor.version }}
+    rerun: always
+  {% endfor %}
+  {% endfor %}