much better field edit tool, camera specifically

Scenes/FlowField/flow_node_data.gd

@@ -0,0 +1,17 @@
+class_name FlowNodeData
+extends Resource
+
+enum NodeType {
+	STANDARD = 0,
+	START = 1,
+	GOAL = 2,
+}
+
+@export var position: Vector3 = Vector3.ZERO
+@export var type: NodeType = NodeType.STANDARD
+@export var buildable: bool = true
+@export var connected_nodes: Array[FlowNodeData]
+@export var in_grid: bool = false
+@export var grid_id: int = -1
+@export var grid_x: int = 0
+@export var grid_y: int = 0