Add new UI components and functionality for member display

- Introduced a new image import for "陨落基围虾.jpg" to enhance visual assets.
- Created a Pause panel script to manage UI state transitions.
- Developed a Circle control for displaying avatars with customizable properties such as cyclotomy, colors, and border width.
- Implemented a ThankMember script to dynamically update member information including name, avatar, and description.

scripts/Contents/Panels/Pause.gd

@@ -0,0 +1,10 @@
+@tool
+extends FullscreenPanelBase
+
+@onready var aboutBtn: Button = $"%aboutBtn"
+
+func _ready():
+	aboutBtn.pressed.connect(
+		func():
+			UIState.setPanel("Thanks")
+	)