Add new styleboxes and import energy texture

- Created a new SVG import for the energy texture, enabling better resource management and compression.
- Added a StyleBoxFlat resource for the top left panel with specified margins, background color, border width, and corner radius.
- Introduced a StyleBoxFlat resource for the top panel with similar properties, ensuring consistent UI design across panels.

styleboxes/topLeftPanel.tres

@@ -0,0 +1,14 @@
+[gd_resource type="StyleBoxFlat" format=3 uid="uid://bsv1daadkv4eq"]
+
+[resource]
+content_margin_left = 10.0
+content_margin_top = 10.0
+content_margin_right = 15.0
+content_margin_bottom = 10.0
+bg_color = Color(0, 0, 0, 0.5)
+border_width_left = 3
+border_width_top = 3
+border_width_right = 3
+border_width_bottom = 3
+border_color = Color(0, 0, 0, 0.75)
+corner_radius_bottom_right = 10

styleboxes/topPanel.tres

@@ -0,0 +1,15 @@
+[gd_resource type="StyleBoxFlat" format=3 uid="uid://dx0udq8nv2ec0"]
+
+[resource]
+content_margin_left = 10.0
+content_margin_top = 10.0
+content_margin_right = 10.0
+content_margin_bottom = 10.0
+bg_color = Color(0, 0, 0, 0.5)
+border_width_left = 3
+border_width_top = 3
+border_width_right = 3
+border_width_bottom = 3
+border_color = Color(0, 0, 0, 0.75)
+corner_radius_bottom_right = 10
+corner_radius_bottom_left = 10