preparing to create new items

Signed-off-by: Stephan Richter <s.richter@srsoftware.de>

frontend/src/urls.svelte.js

@@ -4,6 +4,14 @@ export function api(rel_path){
     return `${location.protocol}//${location.host.replace('5173','8080')}/api/${rel_path}`;
 }
 
+export async function post(url,data){
+    return fetch(url,{
+        credentials : 'include',
+        method      : 'POST',
+        body        : JSON.stringify(data)
+    });
+}
+
 export function target(code){
     if (!code) return null;
     let altered = code;