add a new folder structure redesign organized by packages

packages/core_styles/package.otml

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+title: Core styles
+description: Core styles used by other modules
+author: otclient
+version: 1
+website: https://github.com/edubart/otclient
+enabled: true
+dependencies: [core_fonts]
+script: styles.lua
+

packages/core_styles/styles.lua

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+-- set default font
+App.setDefaultFont("helvetica-11px")
+App.setDefaultFontColor(Color("#f0ad4dff"))
+
+-- load styles
+App.loadStyle("styles/utilities")
+App.loadStyle("styles/panels")
+App.loadStyle("styles/buttons")
+App.loadStyle("styles/labels")
+App.loadStyle("styles/textedits")
+App.loadStyle("styles/windows")
+App.loadStyle("styles/linedecorations")

packages/core_styles/styles/buttons.otml

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+button
+  font: helvetica-11px-bold
+  font-color: #f0ad4dff
+  size: 106 24
+  bordered-image: { source: button_standard.png; border: 5 }
+
+button:hover
+  bordered-image: { source: tibia_flash/button_standard_hover.png; border: 5 }
+
+button:down
+  text-translate: 1 1
+  bordered-image: { source: tibia_flash/button_standard_down.png; border: 5 }
+
+button.small
+  width: 64
+
+button.large
+  width: 144
+
+button.notImplemented
+  onClick: displayErrorBox("Error", "Not implemented yet")
+
+button.closeParent
+  onClick: self.parent:destroy()
+