Rewrite to a API trait.

gamenight-api-client-rs/build.rs

@@ -4,7 +4,20 @@ fn main() {
     println!("cargo::rerun-if-changed=../backend-actix/gamenight-api.yaml");
     let _ = 
         Command::new("openapi-generator")
-            .args(["generate", "-i", "../backend-actix/gamenight-api.yaml", "-g", "rust", "--additional-properties=withSeparateModelsAndApi=true,modelPackage=gamenight_model,apiPackage=gamenight_api,packageName=gamenight-api-client-rs,packageVersion=0.1.0"])
+            .args([
+                "generate",
+                "-i",
+                "../backend-actix/gamenight-api.yaml",
+                "-g",
+                "rust",
+                "--additional-properties=\
+                    withSeparateModelsAndApi=true,\
+                    library=reqwest-trait,\
+                    modelPackage=gamenight_model,\
+                    apiPackage=gamenight_api,\
+                    packageName=gamenight-api-client-rs,\
+                    packageVersion=0.1.0"
+            ])
             .output()
             .expect("Failed to generate models sources for the gamenight API");
 }