First development of the deploy action (#6)

Deploy js code to an instance of screeps.
Some debugging tools are implemented.

Reviewed-on: #6
Co-authored-by: Philipp Horstenkamp <philipp@horstenkamp.de>
Co-committed-by: Philipp Horstenkamp <philipp@horstenkamp.de>

node_modules/screeps-api/.circleci/config.yml

@@ -0,0 +1,41 @@
+version: 2
+jobs:
+  build:
+    working_directory: ~/repo
+    docker:
+      - image: circleci/node:8
+    steps:
+      - checkout
+      - restore_cache:
+          key: dependency-cache-{{ checksum "package.json" }}
+      - run:
+          name: install
+          command: yarn install
+      - save_cache:
+          key: dependency-cache-{{ checksum "package.json" }}
+          paths:
+            - ./node_modules
+      - run:
+          name: lint
+          command: yarn lint
+      - run:
+          name: test
+          command: yarn test
+      - store_artifacts:
+          path: test-results.xml
+          prefix: tests
+      - store_test_results:
+          path: test-results.xml
+      - deploy:
+          name: Maybe Deploy
+          command: |
+            if [ "${CIRCLE_BRANCH}" == "master" ]; then
+              echo "//registry.npmjs.org/:_authToken=$NPM_TOKEN" >> ~/.npmrc
+              npm run 2npm
+            fi
+workflows:
+  version: 2
+  build:
+    jobs:
+    - build:
+        context: screeps