move apis into rom/modules/main for shell compatibility

sys/modules/opus/ui/components/Text.lua

@@ -0,0 +1,20 @@
+local class = require('opus.class')
+local UI    = require('opus.ui')
+local Util  = require('opus.util')
+
+UI.Text = class(UI.Window)
+UI.Text.defaults = {
+	UIElement = 'Text',
+	value = '',
+	height = 1,
+}
+function UI.Text:setParent()
+	if not self.width and not self.ex then
+		self.width = #tostring(self.value)
+	end
+	UI.Window.setParent(self)
+end
+
+function UI.Text:draw()
+	self:write(1, 1, Util.widthify(self.value, self.width, self.align))
+end