[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/pmwcs3/test.esp8266-ard.yaml

@@ -0,0 +1,15 @@
+i2c:
+  - id: i2c_pmwcs3
+    scl: 5
+    sda: 4
+
+sensor:
+  - platform: pmwcs3
+    e25:
+      name: pmwcs3_e25
+    ec:
+      name: pmwcs3_ec
+    temperature:
+      name: pmwcs3_temperature
+    vwc:
+      name: pmwcs3_vwc