[sendspin] Add controller role and sendspin.switch action (PR2) (#15929)

Co-authored-by: Copilot <copilot@github.com>

tests/components/sendspin/common-action.yaml

@@ -0,0 +1,8 @@
+# `sendspin.switch` action enables the controller role, so we use a standalone test
+packages:
+  base: !include common.yaml
+
+wifi:
+  on_connect:
+    then:
+      - sendspin.switch:

tests/components/sendspin/test-action.esp32-idf.yaml

@@ -0,0 +1 @@
+<<: !include common-action.yaml