feat(hospital): add delete & modify apis for hospital

routers/router.go

@@ -17,6 +17,8 @@ func SetupRouter() *gin.Engine {
 	r.GET("/fetchAllRec", handlers.FetchAllRecords)
 
 	// hospital
-	r.POST("/api/addHos", handlers.AddHospital)
+	r.POST("/api/addHos", handlers.AddHospital)         // add hospital
+	r.POST("/api/modifyHos", handlers.ModifyHospital)   // modify hospital
+	r.DELETE("/api/deleteHos", handlers.DeleteHospital) // delete hospital
 	return r
 }