调整api结构；恢复丢失部分api，详见scripts文件夹；新增关阀分析算法，实现api

app/algorithms/__init__.py

@@ -3,6 +3,7 @@ from app.algorithms.sensors import (
     pressure_sensor_placement_sensitivity,
     pressure_sensor_placement_kmeans,
 )
+from app.algorithms.valve_isolation import valve_isolation_analysis
 from app.algorithms.simulations import (
     convert_to_local_unit,
     burst_analysis,
@@ -25,4 +26,5 @@ __all__ = [
     "contaminant_simulation",
     "age_analysis",
     "pressure_regulation",
+    "valve_isolation_analysis",
 ]