[CI] Introduce testing for IDF 5 (and other arbitrary framework versions) (#6802)

* Initial changes to support testing of additional framework versions

* Rename Arduino test files

tests/components/sml/test.esp8266-ard.yaml

@@ -0,0 +1,31 @@
+uart:
+  - id: uart_sml
+    tx_pin: 4
+    rx_pin: 5
+    baud_rate: 9600
+
+sml:
+  id: mysml
+  on_data:
+    - logger.log: "SML on_data"
+
+sensor:
+  - platform: sml
+    name: Total energy
+    sml_id: mysml
+    server_id: 0123456789abcdef
+    obis_code: "1-0:1.8.0"
+    unit_of_measurement: kWh
+    accuracy_decimals: 1
+    device_class: energy
+    state_class: total_increasing
+    filters:
+      - multiply: 0.0001
+
+text_sensor:
+  - platform: sml
+    name: Manufacturer
+    sml_id: mysml
+    server_id: 0123456789abcdef
+    obis_code: "129-129:199.130.3"
+    format: text