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.kt

@@ -317,14 +317,14 @@ fun cmdService(args: Args) {
     }
 
     if (args.serviceSleep != null) {
-        apiRequest("/services/${args.serviceSleep}/sleep", "POST", null, publicKey, secretKey)
-        println("${GREEN}Service sleeping: ${args.serviceSleep}${RESET}")
+        apiRequest("/services/${args.serviceSleep}/freeze", "POST", null, publicKey, secretKey)
+        println("${GREEN}Service frozen: ${args.serviceSleep}${RESET}")
         return
     }
 
     if (args.serviceWake != null) {
-        apiRequest("/services/${args.serviceWake}/wake", "POST", null, publicKey, secretKey)
-        println("${GREEN}Service waking: ${args.serviceWake}${RESET}")
+        apiRequest("/services/${args.serviceWake}/unfreeze", "POST", null, publicKey, secretKey)
+        println("${GREEN}Service unfreezing: ${args.serviceWake}${RESET}")
         return
     }