feat: Write built in themes to the themes file on first run so users can define custom themes

tests/validate_theme_derive_integration_tests.rs

@@ -2,34 +2,34 @@ use validate_theme_derive::ValidateTheme;
 
 #[test]
 fn test_validate_theme_derive() {
-	let theme = Theme {
-		name: "test".to_string(),
-		good: Some(Style {
-			color: "Green".to_owned(),
-		}),
-		bad: Some(Style {
-			color: "Red".to_owned(),
-		}),
-		ugly: Some(Style {
-			color: "Magenta".to_owned(),
-		}),
-	};
+  let theme = Theme {
+    name: "test".to_string(),
+    good: Some(Style {
+      color: "Green".to_owned(),
+    }),
+    bad: Some(Style {
+      color: "Red".to_owned(),
+    }),
+    ugly: Some(Style {
+      color: "Magenta".to_owned(),
+    }),
+  };
 
-	theme.validate();
+  theme.validate();
 }
 
 #[allow(dead_code)]
 struct Style {
-	color: String,
+  color: String,
 }
 
 #[allow(dead_code)]
 #[derive(ValidateTheme)]
 struct Theme {
-	pub name: String,
-	#[validate]
-	pub good: Option<Style>,
-	#[validate]
-	pub bad: Option<Style>,
-	pub ugly: Option<Style>,
-}
+  pub name: String,
+  #[validate]
+  pub good: Option<Style>,
+  #[validate]
+  pub bad: Option<Style>,
+  pub ugly: Option<Style>,
+}