Create getConfigValue.md

Author: DeveloperTryingToCodeLikeOtherOfThem

docs/reference/control/getConfigValue.md

@@ -0,0 +1,16 @@
+## getConfigValue
+Gets the configure's value.
+``` sig
+    getConfigValue(null, null);
+```
+
+## Parameters
+**key:** the configure's id
+**defl:** the configure's value
+
+## Example
+Get the screen's width and height value.
+``` ts
+    const width = control.getConfigValue(DAL.CFG_ARCADE_SCREEN_WIDTH, 160);
+    const height = control.getConfigValue(DAL.CFG_ARCADE_SCREEN_HEIGHT, 120);
+```