feat: Added Assetlib release workflow

.asset-template.json.hb

@@ -0,0 +1,13 @@
+{
+  "title": "Escoria Demo Game",
+  "description": "A demo game made using the Escoria framework",
+  "category_id": "10",
+  "godot_version": "3.3",
+  "version_string": "{{ context.release.tag_name }}",
+  "cost": "MIT",
+  "download_provider": "GitHub",
+  "download_commit": "{{ env.GITHUB_SHA }}",
+  "browse_url": "{{ context.repository.html_url }}",
+  "issues_url": "https://github.com/godot-escoria/escoria-issues/issues",
+  "icon_url": "https://github.com/godot-escoria/.github/raw/main/design/escoria-icon.png"
+}