revert configuration changes (#253)

tutorials/pick_and_place/PickAndPlaceProject/Assets/DemoScripts/Demo.cs

 
     string niryoOneName = "niryo_one";
     string baseLinkName = "base_link";
-    float controllerStiffness = 100000;
-    float controllerDamping = 1000;
+    float controllerStiffness = 10000;
+    float controllerDamping = 100;
     float controllerForceLimit = 1000;
     float controllerSpeed = 30;
     float controllerAcceleration = 10;

tutorials/pick_and_place/PickAndPlaceProject/ProjectSettings/DynamicsManager.asset

   m_SleepThreshold: 0.005
   m_DefaultContactOffset: 0.01
   m_DefaultSolverIterations: 6
-  m_DefaultSolverVelocityIterations: 3
+  m_DefaultSolverVelocityIterations: 1
   m_QueriesHitBackfaces: 0
   m_QueriesHitTriggers: 1
   m_EnableAdaptiveForce: 0

tutorials/pick_and_place/PickAndPlaceProject/ProjectSettings/TimeManager.asset

 --- !u!5 &1
 TimeManager:
   m_ObjectHideFlags: 0
-  Fixed Timestep: 0.01
-  Maximum Allowed Timestep: 0.01
+  Fixed Timestep: 0.02
+  Maximum Allowed Timestep: 0.33333334
-  Maximum Particle Timestep: 0.01
+  Maximum Particle Timestep: 0.03