feat: add commitlint, lint-staged and git hooks

.commitlintrc

@@ -0,0 +1,3 @@
+{
+  "extends": ["@commitlint/config-conventional"]
+}

.githook/commit-msg

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+cat "$1" | npx --no-install commitlint

.githook/pre-commit

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+npx --no-install lint-staged

.lintstagedrc

@@ -0,0 +1,4 @@
+{
+  "*.{js,json}": "npm run lint:js-staged",
+  "*.md": "npm run lint:md-staged"
+}

.markdownlintrc

@@ -0,0 +1,9 @@
+{
+  // Line length
+  "MD013": false,
+
+  // Multiple headings with the same content
+  "MD024": {
+    "allow_different_nesting": true
+  }
+}

.releaserc

@@ -0,0 +1,29 @@
+{
+  "branches": [
+    {
+      "name": "master"
+    }
+  ],
+  "plugins": [
+    "@semantic-release/commit-analyzer",
+    "@semantic-release/release-notes-generator",
+    "@semantic-release/npm",
+    [
+      "@semantic-release/changelog",
+      {
+        "changelogFile": "CHANGELOG.md",
+        "changelogTitle": "# A log of changes"
+      }
+    ],
+    [
+      "@semantic-release/git",
+      {
+        "assets": [
+          "CHANGELOG.md",
+          "package.json"
+        ]
+      }
+    ],
+    "@semantic-release/github"
+  ]
+}