Add RedHat support to the obsidian role

roles/obsidian/templates/obsidian.desktop.j2

@@ -0,0 +1,11 @@
+[Desktop Entry]
+Name=Obsidian
+Exec={{ansible_env.HOME}}/.local/bin/Obsidian
+Terminal=false
+Type=Application
+Icon=obsidian
+StartupWMClass=Obsidian
+X-AppImage-Version={{latest.json.name}}
+Comment=Private and flexible note‑taking app that adapts to the way you think. 
+MimeType=x-scheme-handler/obsidian;
+Categories=Utility;