Migrate settings UI to OGPU themed widgets and add logout

- Replace plain Godot Controls with StatusPanel, ComponentTextInput,
  Toggle, CardButton, and Dropdown components
- Add logout functionality that clears API key or closes session
- Match Steam plugin's settings UI style

core/itch_settings.tscn

@@ -1,88 +1,111 @@
-[gd_scene load_steps=2 format=3 uid="uid://itch_settings_scene"]
+[gd_scene load_steps=7 format=3 uid="uid://itch_settings_scene"]
 
 [ext_resource type="Script" path="res://plugins/itch/core/itch_settings.gd" id="1"]
+[ext_resource type="PackedScene" uid="uid://d1hlp6c8wrqgv" path="res://core/ui/components/status.tscn" id="2"]
+[ext_resource type="PackedScene" uid="uid://d1rjdfxxrdccf" path="res://core/ui/components/text_input.tscn" id="3"]
+[ext_resource type="PackedScene" uid="uid://d1qb7euwlu7bh" path="res://core/ui/components/toggle.tscn" id="4"]
+[ext_resource type="PackedScene" uid="uid://c71ayw7pcw6u6" path="res://core/ui/components/card_button.tscn" id="5"]
+[ext_resource type="PackedScene" uid="uid://xei5afwefxud" path="res://core/ui/components/dropdown.tscn" id="6"]
 
-[node name="ItchSettings" type="Control"]
-layout_mode = 3
+[node name="ItchSettings" type="MarginContainer"]
 anchors_preset = 15
 anchor_right = 1.0
 anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
 script = ExtResource("1")
 
-[node name="VBoxContainer" type="VBoxContainer" parent="."]
-layout_mode = 1
-anchors_preset = 8
-anchor_left = 0.5
-anchor_top = 0.5
-anchor_right = 0.5
-anchor_bottom = 0.5
-offset_left = -200.0
-offset_top = -120.0
-offset_right = 200.0
-offset_bottom = 120.0
-
-[node name="TitleLabel" type="Label" parent="VBoxContainer"]
+[node name="ContentContainer" type="VBoxContainer" parent="."]
 layout_mode = 2
-text = "itch.io"
-horizontal_alignment = 1
+size_flags_horizontal = 3
+size_flags_vertical = 0
+theme_override_constants/separation = 10
 
-[node name="StatusLabel" type="Label" parent="VBoxContainer"]
+[node name="Status" parent="ContentContainer" instance=ExtResource("2")]
 unique_name_in_owner = true
 layout_mode = 2
-text = "Status: starting butlerd..."
+title = "Status"
+description = ""
+status = 2
+color = "red"
 
-[node name="LoginMethod" type="OptionButton" parent="VBoxContainer"]
+[node name="ConnectedStatus" parent="ContentContainer" instance=ExtResource("2")]
 unique_name_in_owner = true
 layout_mode = 2
-item_count = 2
-popup/item_0_text = "API Key"
-popup/item_1_text = "Username & Password"
+title = "Connected"
+description = ""
+color = "gray"
 
-[node name="ApiKeyInput" type="LineEdit" parent="VBoxContainer"]
+[node name="LoggedInStatus" parent="ContentContainer" instance=ExtResource("2")]
 unique_name_in_owner = true
 layout_mode = 2
-placeholder_text = "itch.io API key"
+title = "Logged In"
+description = ""
+color = "gray"
 
-[node name="UsernameInput" type="LineEdit" parent="VBoxContainer"]
+[node name="HSeparator" type="HSeparator" parent="ContentContainer"]
+layout_mode = 2
+
+[node name="LoginMethod" parent="ContentContainer" instance=ExtResource("6")]
 unique_name_in_owner = true
 layout_mode = 2
-placeholder_text = "Username"
+title = "Login Method"
+description = ""
+
+[node name="ApiKeyInput" parent="ContentContainer" instance=ExtResource("3")]
+unique_name_in_owner = true
+layout_mode = 2
+title = "API Key"
+description = "Get an API key from https://itch.io/user/settings/api-keys"
+secret = true
+
+[node name="UsernameInput" parent="ContentContainer" instance=ExtResource("3")]
+unique_name_in_owner = true
+layout_mode = 2
+title = "Username"
+description = ""
 visible = false
 
-[node name="PasswordInput" type="LineEdit" parent="VBoxContainer"]
+[node name="PasswordInput" parent="ContentContainer" instance=ExtResource("3")]
 unique_name_in_owner = true
 layout_mode = 2
-placeholder_text = "Password"
+title = "Password"
+description = ""
 secret = true
 visible = false
 
-[node name="HelpLabel" type="Label" parent="VBoxContainer"]
+[node name="HSeparatorLogin" type="HSeparator" parent="ContentContainer"]
+layout_mode = 2
+
+[node name="SaveButton" parent="ContentContainer" instance=ExtResource("5")]
 unique_name_in_owner = true
 layout_mode = 2
-autowrap_mode = 2
-text = "Get an API key from https://itch.io/user/settings/api-keys"
+text = "Save and Log In"
 
-[node name="FilterUnsupported" type="CheckBox" parent="VBoxContainer"]
+[node name="LogoutButton" parent="ContentContainer" instance=ExtResource("5")]
+unique_name_in_owner = true
+layout_mode = 2
+text = "Logout"
+
+[node name="HSeparator2" type="HSeparator" parent="ContentContainer"]
+layout_mode = 2
+
+[node name="FilterUnsupported" parent="ContentContainer" instance=ExtResource("4")]
 unique_name_in_owner = true
 layout_mode = 2
 text = "Only show games available on this platform"
+button_pressed = true
 
-[node name="ShowPurchases" type="CheckBox" parent="VBoxContainer"]
+[node name="ShowPurchases" parent="ContentContainer" instance=ExtResource("4")]
 unique_name_in_owner = true
 layout_mode = 2
 text = "Show main purchases"
 button_pressed = true
 
-[node name="CollectionsLabel" type="Label" parent="VBoxContainer"]
-unique_name_in_owner = true
+[node name="CollectionsLabel" type="Label" parent="ContentContainer"]
 layout_mode = 2
 text = "Show collections:"
 
-[node name="CollectionsContainer" type="VBoxContainer" parent="VBoxContainer"]
+[node name="CollectionsContainer" type="VBoxContainer" parent="ContentContainer"]
 unique_name_in_owner = true
 layout_mode = 2
-
-[node name="SaveButton" type="Button" parent="VBoxContainer"]
-unique_name_in_owner = true
-layout_mode = 2
-text = "Save and Log In"