Add non-code linters

.github/workflows/build.yaml

@@ -1,5 +1,6 @@
+---
 name: Build
-on:
+"on":
   workflow_dispatch:
 jobs:
   build:

.github/workflows/lint.yaml

@@ -0,0 +1,42 @@
+---
+name: Lint
+
+"on":
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - "*"
+  workflow_dispatch: {}
+
+jobs:
+  lint:
+    name: Lint
+
+    runs-on: ubuntu-24.04
+
+    steps:
+      - uses: actions/[email protected]
+
+      - name: markdownlint
+        uses: DavidAnson/[email protected]
+        with:
+          globs: |
+            *.md
+          # .github/**/*.md
+          config: .markdownlint.yaml
+
+      - name: yamllint
+        uses: ibiqlik/[email protected]
+        with:
+          file_or_dir: |
+            .github/**/*.yaml
+            .*.yaml
+          strict: true
+          config_file: .yamllint.yaml
+
+      - name: actionlint
+        uses: reviewdog/[email protected]
+        env:
+          SHELLCHECK_OPTS: -o all

.github/workflows/update_builds_txt.yaml

@@ -1,5 +1,6 @@
+---
 name: Update builds.txt
-on:
+"on":
   workflow_dispatch:
 jobs:
   build:

.markdownlint.yaml

@@ -0,0 +1,4 @@
+---
+default: true
+MD013:
+  line_length: 100

.yamllint.yaml

@@ -0,0 +1,5 @@
+---
+extends: default
+rules:
+  line-length:
+    max: 100