feat: initial installer release

Installer scripts and compose templates for deploying the Cameleer
SaaS platform. Supports multi-tenant SaaS and standalone modes.

Bootstrap:
  curl -fsSL https://registry.cameleer.io/.../get-cameleer.sh | bash

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

templates/traefik-dynamic.yml

@@ -0,0 +1,6 @@
+tls:
+  stores:
+    default:
+      defaultCertificate:
+        certFile: /certs/cert.pem
+        keyFile: /certs/key.pem