feat: added sample cards for testing

src/assets/card_atlas_sprites.png.import

@@ -0,0 +1,34 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://dpahjbok4tj31"
+path="res://.godot/imported/card_atlas_sprites.png-999525584d336e8b1ecafef7f7df1d0a.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://src/assets/card_atlas_sprites.png"
+dest_files=["res://.godot/imported/card_atlas_sprites.png-999525584d336e8b1ecafef7f7df1d0a.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1

src/scenes/card.tscn

@@ -0,0 +1,3 @@
+[gd_scene format=3 uid="uid://kah10l7jtv2p"]
+
+[node name="Card" type="Node3D"]