Add tool configs

.editorconfig

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+# OM4 default settings
+# v0.9
+# EditorConfig is awesome: https://editorconfig.org
+
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+indent_style = space
+indent_size = 2
+
+[*.md]
+trim_trailing_whitespace = false
+
+[*.{css,json,php,xml}]
+indent_size = 4
+
+[*.php]
+indent_style = tab

.gitattributes

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+.editorconfig export-ignore
+.gitattributes export-ignore
+.github export-ignore
+.gitignore export-ignore
+.wordpress-org export-ignore
+composer.json export-ignore
+phpstan.neon export-ignore

.github/workflows/deploy.yml

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+name: Deploy to WordPress.org
+on:
+  release:
+    types: [published]
+jobs:
+  tag:
+    name: New release
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+      - name: WordPress Plugin Deploy
+        id: deploy
+        uses: 10up/action-wordpress-plugin-deploy@stable
+        with:
+          generate-zip: false
+        env:
+          SVN_USERNAME: ${{ secrets.SVN_USERNAME }}
+          SVN_PASSWORD: ${{ secrets.SVN_PASSWORD }}

.gitignore

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+/composer.lock
+/vendor

composer.json

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+{
+    "require-dev": {
+        "php-stubs/woocommerce-stubs": "^4.4.1",
+        "phpstan/phpstan-deprecation-rules": "^0.12.5",
+        "phpstan/phpstan": "^0.12.42",
+        "szepeviktor/phpstan-wordpress": "^0.6.2",
+        "wp-cli/wp-cli-bundle": "^2.4"
+    },
+    "scripts": {
+        "makepot": "vendor/bin/wp i18n make-pot . languages/cpt-editor.pot",
+        "phpstan": "vendor/bin/phpstan analyse inc cpt-editor.php"
+    }
+}

phpstan.neon

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+includes:
+  - vendor/szepeviktor/phpstan-wordpress/extension.neon
+parameters:
+  fileExtensions:
+    - php
+  level: 5