packaging: makefile, rpm spec, obs service

_service

@@ -0,0 +1,8 @@
+<services>
+  <service name="download_url">
+    <param name="host">github.com</param>
+    <param name="protocol">https</param>
+    <param name="path">/elwrcl/nyi/archive/refs/heads/main.tar.gz</param>
+    <param name="filename">nyi-1.0.0.tar.gz</param>
+  </service>
+</services>