Update logging level for plugin loading and extend static example documentation

- Changed logging level from `info` to `debug` in plugin loading to reduce verbosity during runtime.
- Significantly expanded `examples/static/README.md` with new sections, examples (basic, certbot, deny pages, JWT validator), and detailed usage instructions.
- Improved `examples/docker/docker-compose-changed-label.yml` with clearer redirect syntax using JSON for better readability.
- Fixed handling of empty or invalid JSON in labels within `easymapping` with fallback to default values and error logging.
- Added additional entries to `.gitignore` to exclude dynamic and temporary files like auto-generated configuration files and certificates.

src/plugins/__init__.py

@@ -145,7 +145,7 @@ class PluginManager:
                                 elif plugin.plugin_type == PluginType.DOMAIN:
                                     self.domain_plugins.append(plugin)
 
-                                self.logger.info(f"Loaded {source} plugin: {plugin.name} ({plugin.plugin_type.value})")
+                                self.logger.debug(f"Loaded {source} plugin: {plugin.name} ({plugin.plugin_type.value})")
 
                 except Exception as e:
                     self._handle_error(f"Failed to load plugin from {filepath}: {str(e)}")