Generate api client with openapi-generator (#3)

* Generate api client with openapi-generator

* Add wrapper struct

* Add basic example

src/models/code_challenge_method.rs

@@ -0,0 +1,38 @@
+/*
+ * Tribufu API
+ *
+ * REST API to access Tribufu services.
+ *
+ * The version of the OpenAPI document: 1.1.0
+ * Contact: contact@tribufu.com
+ * Generated by: https://openapi-generator.tech
+ */
+
+use crate::models;
+use serde::{Deserialize, Serialize};
+
+/// 
+#[derive(Clone, Copy, Debug, Eq, PartialEq, Ord, PartialOrd, Hash, Serialize, Deserialize)]
+pub enum CodeChallengeMethod {
+    #[serde(rename = "plain")]
+    Plain,
+    #[serde(rename = "S256")]
+    S256,
+
+}
+
+impl std::fmt::Display for CodeChallengeMethod {
+    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
+        match self {
+            Self::Plain => write!(f, "plain"),
+            Self::S256 => write!(f, "S256"),
+        }
+    }
+}
+
+impl Default for CodeChallengeMethod {
+    fn default() -> CodeChallengeMethod {
+        Self::Plain
+    }
+}
+