TowerArrow 프리팹 추가

- 기존 Player 건물 prefab 활용하여 제작
- GameMain에 prefab 3개 배치
- BuildingData에 TowerAsset 추가
- DefaultNetworkPrefabs list에 TowerArrow 추가

Assets/Data/BuildingData_Tower.asset

@@ -0,0 +1,40 @@
+%YAML 1.1
+%TAG !u! tag:unity3d.com,2011:
+--- !u!114 &11400000
+MonoBehaviour:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 0}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: 937e64980d44d6b46acb35b8046adf34, type: 3}
+  m_Name: BuildingData_Tower
+  m_EditorClassIdentifier: Assembly-CSharp::Northbound.BuildingData
+  buildingName: Tower
+  prefab: {fileID: 0}
+  icon: {fileID: -4093933202056797366, guid: 450ad0aa3eb2cfa4a9d64deab8297ea9, type: 3}
+  width: 4
+  length: 4
+  height: 4
+  placementOffset: {x: 0, y: 0, z: 0}
+  allowRotation: 1
+  requiredWorkAmount: 100
+  workPerInteraction: 10
+  interactionCooldown: 0
+  constructionAnimationTrigger: Tower
+  constructionEquipment:
+    socketName: handslot.r
+    equipmentPrefab: {fileID: 919132149155446097, guid: 804d477fc7f114c498aa6f95452be893, type: 3}
+    attachOnStart: 1
+    detachOnEnd: 1
+    keepEquipped: 0
+    attachDelay: 0
+    detachDelay: 0
+  maxHealth: 100
+  isIndestructible: 0
+  autoRegenerate: 0
+  regenPerSecond: 1
+  providesVision: 1
+  visionRange: 30