Add yamllint configuration.

Author: philderbeast

.github/workflows/hlint.yml

@@ -1,8 +1,7 @@
 name: hlint
 
-on:
-  pull_request:
-  push:
+# yamllint disable-line rule:truthy
+on: [pull_request, push]
 
 jobs:
   style:

.github/workflows/yamllint.yml

@@ -1,6 +1,7 @@
 ---
-name: Yaml Lint
-on: [push]  # yamllint disable-line rule:truthy
+name: yamllint
+# yamllint disable-line rule:truthy
+on: [pull_request, push]
 jobs:
   lint:
     runs-on: ubuntu-latest

.yamllint.yaml

@@ -0,0 +1,10 @@
+extends: default
+rules:
+  document-start: disable
+  line-length: disable
+ignore: |
+  .github/workflows/arm64-release.yml
+  .github/workflows/integration-tests.yml
+  .github/workflows/unit-tests.yml
+  doc
+  test