build(lando): add PHP 8.2 local testing environment

env/php-8.2/.lando.dist.yml

@@ -0,0 +1,27 @@
+name: gettext-context-php-8.2
+services:
+  appserver:
+    type: php:custom
+    via: cli
+    app_mount: delegated
+    overrides:
+      image: slimdeluxe/php:8.2
+      volumes:
+        # Mount the project root directory to /app
+        - "../..:/app"
+        # Prevent the source vendor directory to be mounted
+        - /app/vendor
+        # Make available the source composer.json to be used by the merged one
+        - "../../composer.json:/usr/local/src/composer.json"
+        # Use the merged composer.json instead of the source one
+        - "./composer.json:/app/composer.json"
+tooling:
+  php:
+    service: appserver
+  composer:
+    service: appserver
+  test:
+    service: appserver
+    description: Run tests
+    # For some reason, "composer test" does not work for this package, so we use the PHPUnit binary directly
+    cmd: "php vendor/bin/phpunit"

env/php-8.2/composer.json

@@ -0,0 +1,24 @@
+{
+    "require": {
+        "wikimedia/composer-merge-plugin": "dev-master"
+    },
+    "extra": {
+        "merge-plugin": {
+            "require": [
+                "/usr/local/src/composer.json"
+            ],
+            "merge-scripts": true
+        }
+    },
+    "config": {
+        "lock": false,
+        "allow-plugins": {
+            "wikimedia/composer-merge-plugin": true
+        }
+    },
+    "autoload-dev": {
+        "psr-4": {
+            "DataLinx\\GettextContext\\Tests\\": "tests/"
+        }
+    }
+}