Ona devcontainer and tasks/services setup

.devcontainer/devcontainer.json

@@ -0,0 +1,4 @@
+{
+  "name": "SmartCache",
+  "image": "mcr.microsoft.com/devcontainers/php:8.4"
+}

.ona/config.yaml

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+tasks:
+  installDeps:
+    name: Install dependencies
+    description: Install the locked Composer dependencies for the project.
+    command: composer install --no-interaction --prefer-dist
+    triggeredBy:
+      - manual
+      - postDevcontainerStart
+      - prebuild
+
+  test:
+    name: Run tests
+    description: Run the PHPUnit test suite through the Composer script.
+    command: composer test
+    triggeredBy:
+      - manual
+    dependsOn:
+      - installDeps