First Flight

Added MPL license headers
SectorRenderer renders entities in sector, manages particle systems for ship thrusters
Thrusters apply torque based on orientation and position relative to ship center of mass
GameManager controls the player ship's thrusters
Player can dock with station if they are near

Assets/Scripts/ServerShared/ItemInstance.cs

@@ -1,4 +1,8 @@
-using System;
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+using System;
 using System.Collections;
 using System.Collections.Generic;
 using System.Linq;