dump_devinfo improvements (#657)

* dump_devinfo improvements

* Scrub only the last three bytes for mac addresses
* Add --target to allow creating fixtures based on discovery
* Save fixtures directly to correct location, add --basedir to allow defining the location of repository root
* Add --autosave to disable prompting for saving

* Update fixtures for devices I have

* Add fixture for HS110 hw 4.0 fw 1.0.4

* Improve help strings

* Fix tests

* Update devtools README

* Default to discovery if no host/target given

kasa/tests/fixtures/smart/P110(EU)_1.0_1.2.3.json

@@ -86,7 +86,7 @@
         "factory_default": false,
         "ip": "127.0.0.123",
         "is_support_iot_cloud": true,
-        "mac": "00-00-00-00-00-00",
+        "mac": "48-22-54-00-00-00",
         "mgt_encrypt_schm": {
             "encrypt_type": "AES",
             "http_port": 80,
@@ -140,7 +140,7 @@
         "lang": "en_US",
         "latitude": 0,
         "longitude": 0,
-        "mac": "00-00-00-00-00-00",
+        "mac": "48-22-54-00-00-00",
         "model": "P110",
         "nickname": "I01BU0tFRF9OQU1FIw==",
         "oem_id": "00000000000000000000000000000000",
@@ -158,23 +158,23 @@
     "get_device_time": {
         "region": "Europe/Berlin",
         "time_diff": 60,
-        "timestamp": 1704212614
+        "timestamp": 1705699998
     },
     "get_device_usage": {
         "power_usage": {
-            "past30": 896,
-            "past7": 259,
-            "today": 0
+            "past30": 1010,
+            "past7": 368,
+            "today": 46
         },
         "saved_power": {
-            "past30": 23138,
-            "past7": 6684,
-            "today": 0
+            "past30": 26144,
+            "past7": 9536,
+            "today": 1218
         },
         "time_usage": {
-            "past30": 24034,
-            "past7": 6943,
-            "today": 0
+            "past30": 27154,
+            "past7": 9904,
+            "today": 1264
         }
     },
     "get_electricity_price_config": {
@@ -316,11 +316,11 @@
             0,
             0
         ],
-        "local_time": "2024-01-02 17:23:34",
-        "month_energy": 0,
-        "month_runtime": 0,
-        "today_energy": 0,
-        "today_runtime": 0
+        "local_time": "2024-01-19 22:33:18",
+        "month_energy": 430,
+        "month_runtime": 11571,
+        "today_energy": 46,
+        "today_runtime": 1264
     },
     "get_fw_download_state": {
         "auto_upgrade": false,
@@ -341,7 +341,7 @@
         }
     },
     "get_max_power": {
-        "max_power": 3847
+        "max_power": 3904
     },
     "get_next_event": {},
     "get_protection_power": {
@@ -356,7 +356,16 @@
         "sum": 0
     },
     "get_wireless_scan_info": {
-        "ap_list": [],
+        "ap_list": [
+            {
+                "bssid": "000000000000",
+                "channel": 0,
+                "cipher_type": 2,
+                "key_type": "wpa_psk",
+                "signal_level": 3,
+                "ssid": "I01BU0tFRF9TU0lEIw=="
+            }
+        ],
         "wep_supported": false
     },
     "qs_component_nego": {