ci: build Hugo artifact (#142)

.github/workflows/hugo-artifact.yml

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+name: Build Hugo Artifact
+
+# Controls when the action will run.
+on:
+    # Triggers the workflow on push or pull request events but only for the master branch
+    push:
+        branches: [master]
+
+    # Allows you to run this workflow manually from the Actions tab
+    workflow_dispatch:
+
+# A workflow run is made up of one or more jobs that can run sequentially or in parallel
+jobs:
+    # This workflow contains a single job called "build"
+    build:
+        # The type of runner that the job will run on
+        runs-on: ubuntu-latest
+
+        # Steps represent a sequence of tasks that will be executed as part of the job
+        steps:
+            # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
+            - uses: actions/checkout@v2
+
+            - name: Hugo setup
+              uses: peaceiris/actions-hugo@v2.4.13
+              with:
+                  # The Hugo version to download (if necessary) and use. Example: 0.58.2
+                  hugo-version: latest # optional, default is latest
+                  # Download (if necessary) and use Hugo extended version. Example: true
+                  extended: true # optional, default is false
+
+            # Runs a set of commands using the runners shell
+            - name: Generate Hugo site
+              run: cd exampleSite && hugo --gc --themesDir ../..
+
+            - name: Upload Hugo artifact
+              uses: actions/upload-artifact@v2.2.2
+              with:
+                  # Artifact name
+                  name: resources
+                  # A file, directory or wildcard pattern that describes what to upload
+                  path: resources