Convert readme and science info

exp_gui/module/styles.lua

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+--- @class ExpGui
+local ExpGui = require("modules/exp_gui")
+
+--- @class ExpGui.styles
+local styles = {}
+ExpGui.styles = styles
+
+function styles.sprite(style)
+    style = style or {}
+    if not style.padding then
+        style.padding = -2
+    end
+    return style
+end
+
+return styles