Create Dependabot config file (#566)

* Create Dependabot config file

* Update dependabot.yml

* Create automerge.yml

* fix linting errors

* auto label dependencies so that they get automerged

* try multiple dependabot config

* remove the labeller

* update automerge

* add automerge label for dev deps

* Delete labels.json

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>
Co-authored-by: Chris Nesbitt-Smith <chris@cns.me.uk>

Author: dependabot-preview[bot]

.github/dependabot.yml

@@ -0,0 +1,21 @@
+version: 2
+updates:
+  - package-ecosystem: npm
+    directory: '/'
+    schedule:
+      interval: daily
+    allow:
+      - dependency-type: 'production'
+    labels:
+      - 'prod-dependencies'
+
+  - package-ecosystem: 'npm'
+    directory: '/'
+    schedule:
+      interval: 'daily'
+    target-branch: master
+    allow:
+      - dependency-type: 'development'
+    labels:
+      - 'dev-dependencies'
+      - 'automerge'

.github/workflows/automerge.yml

@@ -0,0 +1,27 @@
+name: automerge
+on:
+  pull_request:
+    types:
+      - labeled
+      - unlabeled
+      - synchronize
+      - opened
+      - edited
+      - ready_for_review
+      - reopened
+      - unlocked
+  pull_request_review:
+    types:
+      - submitted
+  check_suite:
+    types:
+      - completed
+  status: {}
+jobs:
+  automerge:
+    runs-on: ubuntu-latest
+    steps:
+      - name: automerge
+        uses: 'pascalgn/automerge-action@v0.11.0'
+        env:
+          GITHUB_TOKEN: '${{ secrets.GITHUB_TOKEN }}'