feat: rename repo to cluster-template (#1270)

* feat: rename repo to cluster-template

Signed-off-by: Devin Buhl <devin@buhl.casa>

* Update README.md

* Update README.md

* Update README.md

---------

Signed-off-by: Devin Buhl <devin@buhl.casa>

.devcontainer/ci/features/devcontainer-feature.json

@@ -1,6 +1,6 @@
 {
   "name": "Flux Cluster Template (Tools)",
-  "id": "flux-cluster-template",
+  "id": "cluster-template",
   "version": "1.0.0",
   "description": "Install Tools"
 }