Add basic linter configuration

.editorconfig

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+# EditorConfig is awesome: https://EditorConfig.org
+
+[*]
+# Ensure consistent file encoding in UNIX style
+charset = utf-8
+end_of_line = lf

.github/workflows/check-generic.yaml

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+# Generic checks to ease collaboration:
+# - consistent file encoding in UNIX style
+# - whitespaces in all purposes files like markdown, yaml, etc
+name: Check Generic
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  editorconfig-checker:
+    name: Run editorconfig-checker
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Run editorconfig-checker
+        run: docker run --rm --volume=$PWD:/check mstruebing/editorconfig-checker
+
+  markdownlint:
+    name: Run markdownlint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Run markdownlint-cli2
+        uses: DavidAnson/markdownlint-cli2-action@v16
+
+  yamllint:
+    name: Run yamllint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Run yamllint
+        run: yamllint .

.github/workflows/check.yaml

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+name: Check Code Quality
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  # lint-eslint:
+  #   name: Lint ESLint
+  #   runs-on: ubuntu-latest
+
+  #   steps:
+  #     - uses: actions/checkout@v4
+
+  #     - name: Setup Node.js
+  #       uses: actions/setup-node@v4
+  #       with:
+  #         node-version: ">=18.x"
+
+  #     - name: Install dependencies
+  #       run: npm install
+
+  #     - name: Run ESLint
+  #       run: npm run lint
+
+  lint-prettier:
+    name: Lint Prettier
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: ">=18.x"
+
+      - name: Run Prettier
+        run: npx prettier . --check

.markdownlint-cli2.yaml

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+# Disable some built-in rules
+config:
+  line-length: false
+  no-inline-html: false
+  first-line-h1: false
+  code-fence-style:
+    style: backtick
+
+# Define glob expressions to use (only valid at root)
+globs:
+  - "**/*.md"
+
+# Ignore files that are not part of version control
+gitignore: true

.prettierrc.json

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+{
+  "semi": false,
+  "trailingComma": "es5",
+  "useTabs": false
+}

.yamllint

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+extends: default
+
+ignore-from-file: .gitignore
+
+rules:
+  document-start: disable
+  indentation:
+    spaces: 2
+  line-length: disable
+  quoted-strings:
+    quote-type: double
+    required: only-when-needed
+    allow-quoted-quotes: true
+    check-keys: true
+  truthy:
+    check-keys: false