Add planet scanner and octopus biome

buildings/ScannerBuildingDefinition.tres

@@ -0,0 +1,25 @@
+[gd_resource type="Resource" script_class="BuildingDefinition" load_steps=3 format=3]
+
+[ext_resource type="Script" path="res://buildings/BuildingDefinition.gd" id="1"]
+[ext_resource type="PackedScene" path="res://buildings/ScannerBuildingVisual.tscn" id="2"]
+
+[resource]
+script = ExtResource("1")
+definition_id = "planet_scanner"
+display_name = "Planet Scanner"
+description = "Searches deep space for the nearest planet of a chosen type and reveals it on the world map. Survey all four ordinary planet types to identify the tentacled world."
+cost = 45
+build_resource_costs = {"ore": 45, "gas": 15}
+action_icon = 47
+menu_icon = 47
+visual_scene = ExtResource("2")
+capabilities = PackedStringArray("planet_scanner")
+map_color = Color(0.35, 0.88, 1, 1)
+map_sides = 6
+map_radius = 8.0
+map_phase = 0.523599
+menu_button_name = "ScannerButton"
+menu_label_name = "ScannerLabel"
+menu_cost_name = "ScannerCost"
+unique = true
+max_hp = 75