chore: Derive Default instead of manual implementation

Author: Maximkaaa

galileo/src/layer/vector_tile_layer/style.rs

@@ -79,9 +79,10 @@ pub struct StyleRule {
 /// Symbol of an object in a vector tile.
 ///
 /// An the object has incompatible type with the symbol, the object is not renderred.
-#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
+#[derive(Default, Debug, Clone, Serialize, Deserialize, PartialEq)]
 pub enum VectorTileSymbol {
     /// Do not render object.
+    #[default]
     None,
     /// Symbol for a point object.
     #[serde(rename = "point")]
@@ -97,12 +98,6 @@ pub enum VectorTileSymbol {
     Label(VectorTileLabelSymbol),
 }
 
-impl Default for VectorTileSymbol {
-    fn default() -> Self {
-        Self::None
-    }
-}
-
 impl VectorTileSymbol {
     pub(crate) fn line(&self) -> Option<&VectorTileLineSymbol> {
         match self {

galileo/src/render/text/mod.rs

@@ -143,22 +143,17 @@ impl Default for FontWeight {
 }
 
 /// Font style.
-#[derive(Debug, Copy, Clone, PartialEq, Serialize, Deserialize)]
+#[derive(Default, Debug, Copy, Clone, PartialEq, Serialize, Deserialize)]
 pub enum FontStyle {
     /// Normal font.
+    #[default]
     Normal,
     /// Italic font.
     Italic,
     /// Oblique font.
     Oblique,
 }
 
-impl Default for FontStyle {
-    fn default() -> Self {
-        Self::Normal
-    }
-}
-
 /// Queryable properties of a font
 pub struct FontProperties {
     /// Font weight