build(dev): enhance local development environment and setup workflow (#358)

Improve the developer experience by providing structured setup scripts,
VS Code workspace configurations, and detailed documentation.

- Add VS Code workspace configuration and recommended settings
- Update README.md with system requirements and VS Code setup instructions
- Refactor `script/setup` to include Python 3.11+ validation and system dependency checks
- Add option to skip PulseAudio wait in `docker-entrypoint.sh` for local development
- Update `.gitignore` to ensure consistent version file handling

.vscode/tasks.json

@@ -0,0 +1,62 @@
+{
+  "version": "2.0.0",
+  "tasks": [
+    {
+      "label": "Setup (incl. dev dependencies)",
+      "type": "shell",
+      "command": "./script/setup --dev",
+      "group": "build",
+      "presentation": {
+        "echo": true,
+        "reveal": "always",
+        "focus": false,
+        "panel": "new",
+        "clear": true
+      },
+      "problemMatcher": []
+    },
+    {
+      "label": "Run Linter",
+      "type": "shell",
+      "command": "./script/lint",
+      "group": "build",
+      "presentation": {
+        "echo": true,
+        "reveal": "always",
+        "focus": false,
+        "panel": "new"
+      },
+      "problemMatcher": []
+    },
+    {
+      "label": "Run Tests",
+      "type": "shell",
+      "command": "./script/tests",
+      "group": "test",
+      "presentation": {
+        "echo": true,
+        "reveal": "always",
+        "focus": false,
+        "panel": "new"
+      },
+      "problemMatcher": []
+    },
+    {
+      "label": "Run Application (Docker)",
+      "type": "shell",
+      "command": "docker-compose",
+      "args": ["-f", "docker-compose.dev.yml", "up"],
+      "group": "none",
+      "presentation": {
+        "echo": true,
+        "reveal": "always",
+        "focus": false,
+        "panel": "new"
+      },
+      "problemMatcher": [],
+      "options": {
+        "envFile": "${workspaceFolder}/.env"
+      }
+    }
+  ]
+}