ci: initial setup (#16)

Check all PR titles for conventional commits conformity.

Automatically add labels to PRs based on file changes.

Configure dependabot version updates for GitHub Actions ecosystem.

.github/dependabot.yml

@@ -0,0 +1,10 @@
+---
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    commit-message:
+      prefix: "ci"
+    schedule:
+      interval: "weekly"
+      day: "sunday"

.github/labeler.yml

@@ -0,0 +1,24 @@
+---
+ci:
+  - .github/workflows/*
+
+docs:
+  - "**/*.md"
+
+Alacritty:
+  - alacritty/**/*
+
+Helix:
+  - helix/**/*
+
+Neovim:
+  - neovim/**/*
+
+Vim:
+  - vim/**/*
+
+Wezterm:
+  - wezterm/**/*
+
+zsh:
+  - zsh/**/*

.github/workflows/pr.yml

@@ -0,0 +1,36 @@
+---
+name: PR
+on:
+  - pull_request
+
+jobs:
+  labels:
+    name: Labels
+    runs-on: ubuntu-latest
+    permissions:
+      pull-requests: write
+      contents: read
+    steps:
+      - name: Add labels based on changes
+        uses: actions/[email protected]
+        with:
+          repo-token: "${{ secrets.GITHUB_TOKEN }}"
+
+  title:
+    name: Title
+    runs-on: ubuntu-latest
+    permissions:
+      pull-requests: read
+    steps:
+      - name: Check title
+        uses: amannn/[email protected]
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          scopes: |
+            alacritty
+            helix
+            neovim
+            vim
+            wezterm
+            zsh