Add UI components for Feed and Item displays, including SVG resources

- Introduced FeedCard and FieldShow scenes with corresponding GDScript files for managing feed and item display.
- Added SVG resources for banana and baseball items.
- Updated ItemStore to include mappings for item types and names in Chinese.
- Enhanced FieldShow and ItemShow scripts to dynamically update UI elements based on exported properties.
- Implemented a new Feed class for structured feed data handling.

scripts/Statemachine/FieldShow.gd

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+@tool
+extends HBoxContainer
+
+@export var field: FieldStore.Entity = FieldStore.Entity.MAX_HEALTH
+@export var value: String = ""
+
+@onready var nameLabel: Label = $"%name"
+@onready var valueLabel: Label = $"%value"
+
+func _process(_delta):
+	nameLabel.text = FieldStore.entityMap[field]
+	valueLabel.text = value

scripts/Statemachine/ItemShow.gd

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+@tool
+extends HBoxContainer
+
+@export var type: ItemStore.ItemType = ItemStore.ItemType.BASEBALL
+@export var count: int = 0
+
+@onready var avatarTexture: TextureRect = $"%avatar"
+@onready var countLabel: Label = $"%count"
+
+func _process(_delta):
+	avatarTexture.texture = load("res://resources/items/%s.svg" % ItemStore.idMap[type])
+	countLabel.text = str(count)