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.cr

@@ -552,14 +552,14 @@ def cmd_service(args)
   end
 
   if sleep_id = args[:sleep]?.as?(String)
-    api_request("/services/#{sleep_id}/sleep", public_key, secret_key, method: "POST")
-    puts "#{GREEN}Service sleeping: #{sleep_id}#{RESET}"
+    api_request("/services/#{sleep_id}/freeze", public_key, secret_key, method: "POST")
+    puts "#{GREEN}Service frozen: #{sleep_id}#{RESET}"
     return
   end
 
   if wake_id = args[:wake]?.as?(String)
-    api_request("/services/#{wake_id}/wake", public_key, secret_key, method: "POST")
-    puts "#{GREEN}Service waking: #{wake_id}#{RESET}"
+    api_request("/services/#{wake_id}/unfreeze", public_key, secret_key, method: "POST")
+    puts "#{GREEN}Service unfreezing: #{wake_id}#{RESET}"
     return
   end