chore: checkpoint before Python removal

vendor/schemars/examples/validate.rs

@@ -0,0 +1,24 @@
+use schemars::{schema_for, JsonSchema};
+
+#[derive(JsonSchema)]
+pub struct MyStruct {
+    #[validate(range(min = 1, max = 10))]
+    pub my_int: i32,
+    pub my_bool: bool,
+    #[validate(required)]
+    pub my_nullable_enum: Option<MyEnum>,
+}
+
+#[derive(JsonSchema)]
+pub enum MyEnum {
+    StringNewType(#[validate(phone)] String),
+    StructVariant {
+        #[validate(length(min = 1, max = 100))]
+        floats: Vec<f32>,
+    },
+}
+
+fn main() {
+    let schema = schema_for!(MyStruct);
+    println!("{}", serde_json::to_string_pretty(&schema).unwrap());
+}