Add mago.toml and mago.yml for GitHub Actions

.github/workflows/mago.yml

@@ -0,0 +1,25 @@
+name: Mago
+
+permissions:
+  contents: read
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  run:
+    name: Run Mago
+    runs-on: 'ubuntu-latest'
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+
+      - name: Setup PHP
+        uses: ./.github/actions/setup-php
+
+      - name: Install Mago
+        run: composer config --no-plugins allow-plugins.carthage-software/mago true; composer require --dev carthage-software/mago:1.9.1
+
+      - name: Run Mago
+        run: ./vendor/bin/mago --config .mago/mago.toml analyze

.mago/mago.toml

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+# Welcome to Mago!
+# For full documentation, see https://mago.carthage.software/tools/overview
+php-version = "8.1.0"
+
+[source]
+workspace = "."
+paths = ["src/"]
+includes = ["vendor"]
+excludes = []
+
+[formatter]
+print-width = 120
+tab-width = 4
+use-tabs = false
+
+[linter]
+integrations = ["phpunit"]
+
+[linter.rules]
+ambiguous-function-call = { enabled = false }
+literal-named-argument = { enabled = false }
+halstead = { effort-threshold = 7000 }
+
+[analyzer]
+plugins = []
+find-unused-definitions = false
+find-unused-expressions = false
+analyze-dead-code = false
+memoize-properties = true
+allow-possibly-undefined-array-keys = true
+check-throws = false
+check-missing-override = false
+find-unused-parameters = false
+strict-list-index-checks = false
+no-boolean-literal-comparison = false
+check-missing-type-hints = false
+register-super-globals = true
+ignore = [
+    # error
+    "falsable-return-statement", "invalid-iterator", "invalid-property-access", "invalid-return-statement", "less-specific-argument", "mixed-argument", "mixed-array-access", "mixed-array-assignment", "mixed-operand", "mixed-property-access", "mixed-property-type-coercion", "mixed-return-statement", "non-existent-class", "nullable-return-statement", "possible-method-access-on-null", "possibly-false-argument", "possibly-invalid-argument", "possibly-null-argument", "possibly-null-property-access",
+    # warning
+    "ambiguous-object-property-access", "generic-object-iteration", "impossible-condition", "impossible-null-type-comparison", "impossible-type-comparison", "mixed-assignment", "possibly-false-operand", "possibly-invalid-iterator", "possibly-null-array-access", "possibly-null-iterator", "possibly-null-operand", "string-member-selector",
+    # help
+    "redundant-comparison", "redundant-logical-operation"
+]