Add Gitlab-CI base file

.drone.yml

----
-kind: pipeline
-name: default
-
-platform:
-  os: linux
-  arch: amd64
-
-workspace:
-  base: /opt
-  path: website
-
-steps:
-- name: build
-  pull: default
-  image: n7st/drone-hugo:0.53
-  url: https://netsplit.uk
-  validate: true
-  buildDrafts: false
-  buildExpired: false
-  buildFuture: false
-
-...

.gitlab-ci.yml

+image: dettmering/hugo-build:0.53
+
+variables:
+    url: https://netsplit.uk/
+
+before_script:
+    - echo "Test\n";
+
+stages:
+    - generate
+    - deploy
+
+generate:
+    stage: generate
+    script:
+        - echo "Test generate\n"
+        - hugo version
+
+deploy:
+    stage: deploy
+    script:
+        - echo "Test deploy\n"
+        - hugo version