Add default arguments for api_* endpoints to prevent segfaults

src/launchpad.h

@@ -69,13 +69,13 @@ public:
     // API Methods
     std::optional<archive> get_archive(const std::string& distribution_name);
 
-    std::optional<std::string> api_get(const std::string& endpoint, const std::map<std::string, std::string>& params = {}) const;
-    std::optional<std::string> api_post(const std::string& endpoint,
+    std::optional<std::string> api_get(const std::string& endpoint = "", const std::map<std::string, std::string>& params = {}) const;
+    std::optional<std::string> api_post(const std::string& endpoint = "",
                                         const std::map<std::string, std::string>& params,
                                         bool build_endpoint = true,
                                         const std::string& token_secret_override = "");
-    std::optional<std::string> api_patch(const std::string& endpoint, const nlohmann::json& data);
-    std::optional<std::string> api_delete(const std::string& endpoint);
+    std::optional<std::string> api_patch(const std::string& endpoint = "", const nlohmann::json& data);
+    std::optional<std::string> api_delete(const std::string& endpoint = "");
 
     std::string build_full_url(const std::string& endpoint) const;