Add basic CircleCI config (#597)

* Add basic CircleCI config

* Store packing artifacts

* Add destination prefix

.circleci/config.yml

@@ -0,0 +1,35 @@
+version: 2
+jobs:
+  pack:
+    docker:
+      - image: circleci/node
+    steps:
+      - checkout
+      - run:
+          name: Install dependencies
+          command: npm install --loglevel=error
+          working_directory: ~/project/_tools
+      - run:
+          name: Pack PBOs
+          command: npx gulp
+          working_directory: ~/project/_tools
+      - store_artifacts:
+          path: ~/project/_tools/build/pbo
+          destination: 'KP-Liberation'
+  validate:
+    docker:
+      - image: circleci/python
+    steps:
+      - checkout
+      - run:
+          name: Install SQFLint
+          command: sudo pip install sqflint
+      - run:
+          name: Validate SQF
+          command: sqflint -d Missionframework
+workflows:
+  version: 2
+  build:
+    jobs:
+      - pack
+      - validate