Rename sleep/wake to freeze/unfreeze across all 42 implementations

API endpoint changes:
- /services/{id}/sleep → /services/{id}/freeze
- /services/{id}/wake → /services/{id}/unfreeze

CLI flag changes:
- --sleep → --freeze
- --wake → --unfreeze

Message changes:
- 'Service sleeping' → 'Service frozen'
- 'Service waking' → 'Service unfreezing'

un.ex

@@ -218,14 +218,14 @@ defmodule Un do
 
   defp service_command(["--freeze", service_id | _]) do
     api_key = get_api_key()
-    curl_post(api_key, "/services/#{service_id}/sleep", "{}")
-    IO.puts("#{@green}Service sleeping: #{service_id}#{@reset}")
+    curl_post(api_key, "/services/#{service_id}/freeze", "{}")
+    IO.puts("#{@green}Service frozen: #{service_id}#{@reset}")
   end
 
   defp service_command(["--unfreeze", service_id | _]) do
     api_key = get_api_key()
-    curl_post(api_key, "/services/#{service_id}/wake", "{}")
-    IO.puts("#{@green}Service waking: #{service_id}#{@reset}")
+    curl_post(api_key, "/services/#{service_id}/unfreeze", "{}")
+    IO.puts("#{@green}Service unfreezing: #{service_id}#{@reset}")
   end
 
   defp service_command(["--destroy", service_id | _]) do