Add yamllint (#149)

.github/dependabot.yml

@@ -1,3 +1,4 @@
+---
 version: 2
 updates:
   - package-ecosystem: "gomod"

.github/workflows/ci.yaml

@@ -41,3 +41,9 @@ jobs:
       - uses: "actions/checkout@v3.3.0"
       - uses: "actions/setup-go@v4"
       - run: "go test ./..."
+
+  yamllint:
+    runs-on: "ubuntu-latest"
+    steps:
+      - uses: "actions/checkout@v3.3.0"
+      - uses: "ibiqlik/action-yamllint@v3"

.yamllint

@@ -0,0 +1,14 @@
+---
+extends: 'default'
+
+ignore: |-
+  /dist/
+
+rules:
+  empty-values: 'enable'
+  indentation:
+    spaces: 2
+  line-length: 'disable'
+  quoted-strings: 'enable'
+  truthy:
+    check-keys: false