Add HS103(US) hw 5.0 fw 1.0.3 fixture (#1818)

SUPPORTED.md

@@ -32,6 +32,7 @@ Some newer Kasa devices require authentication. These are marked with [^1] in th
   - Hardware: 1.0 (US) / Firmware: 1.5.7
   - Hardware: 2.1 (US) / Firmware: 1.1.2
   - Hardware: 2.1 (US) / Firmware: 1.1.4
+  - Hardware: 5.0 (US) / Firmware: 1.0.3
 - **HS105**
   - Hardware: 1.0 (US) / Firmware: 1.5.6
 - **HS110**

tests/fixtures/iot/HS103(US)_5.0_1.0.3.json

@@ -0,0 +1,73 @@
+{
+    "cnCloud": {
+        "get_info": {
+            "binded": 1,
+            "cld_connection": 1,
+            "err_code": 0,
+            "fwDlPage": "",
+            "fwNotifyType": -1,
+            "illegalType": 0,
+            "server": "n-devs.tplinkcloud.com",
+            "stopConnect": 0,
+            "tcspInfo": "",
+            "tcspStatus": 1,
+            "username": "user@example.com"
+        },
+        "get_intl_fw_list": {
+            "err_code": 0,
+            "fw_list": [
+                {
+                    "fwLocation": 0,
+                    "fwReleaseDate": "2026-02-28",
+                    "fwReleaseLog": "Modifications and Bug Fixes:\n1. Improved time synchronization accuracy.\n2. Enhanced device local communication security.\n3. Enhanced device stability.",
+                    "fwReleaseLogUrl": "undefined yet",
+                    "fwTitle": "Hi, a new firmware with performance improvement is available for your HS103.",
+                    "fwType": 1,
+                    "fwUrl": "http://ota-download.tplinkcloud.com/firmware/HS103_FCC_1.1.3_Build_250908_Rel.112508_2025-09-08_11.26.24_1772244428745.bin",
+                    "fwVer": "1.1.3 Build 250908 Rel.112508"
+                }
+            ]
+        }
+    },
+    "schedule": {
+        "get_next_action": {
+            "err_code": 0,
+            "type": -1
+        },
+        "get_rules": {
+            "enable": 1,
+            "err_code": 0,
+            "rule_list": [],
+            "version": 2
+        }
+    },
+    "system": {
+        "get_sysinfo": {
+            "active_mode": "none",
+            "alias": "#MASKED_NAME#",
+            "dev_name": "Smart Wi-Fi Plug Mini",
+            "deviceId": "0000000000000000000000000000000000000000",
+            "err_code": 0,
+            "feature": "TIM",
+            "hwId": "00000000000000000000000000000000",
+            "hw_ver": "5.0",
+            "icon_hash": "",
+            "latitude_i": 0,
+            "led_off": 0,
+            "longitude_i": 0,
+            "mac": "00:5F:67:00:00:00",
+            "mic_type": "IOT.SMARTPLUGSWITCH",
+            "model": "HS103(US)",
+            "next_action": {
+                "type": -1
+            },
+            "oemId": "00000000000000000000000000000000",
+            "on_time": 0,
+            "relay_state": 0,
+            "rssi": -57,
+            "status": "new",
+            "sw_ver": "1.0.3 Build 201015 Rel.142523",
+            "updating": 0
+        }
+    }
+}