fix: add hex metadata to app.src (#6)

* fix: add hex metadata (licenses, description, links)

Required for hex publish validation.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* fix: add hex metadata (licenses, links) to app.src

Required for hex publish validation.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: Taure

src/opentelemetry_nova.app.src

@@ -4,5 +4,7 @@
     {registered, []},
     {applications, [kernel, stdlib, opentelemetry_api, opentelemetry_api_experimental]},
     {env, []},
-    {modules, []}
+    {modules, []},
+    {licenses, ["MIT"]},
+    {links, [{"GitHub", "https://github.com/novaframework/opentelemetry_nova"}]}
 ]}.