Make basic text shaping the default shaping strategy

wgpu/src/layer/text.rs

@@ -24,4 +24,14 @@ pub struct Text<'a> {
 
     /// The vertical alignment of the [`Text`].
     pub vertical_alignment: alignment::Vertical,
+
+    /// Whether the text needs advanced shaping and font fallback.
+    ///
+    /// You will need to enable this flag if the text contains a complex
+    /// script, the font used needs it, and/or multiple fonts in your system
+    /// may be needed to display all of the glyphs.
+    ///
+    /// Advanced shaping is expensive! You should only enable it when
+    /// necessary.
+    pub advanced_shape: bool,
 }