win_say: Fix issue, add integration tests (#26089)

* win_say: Fix issue, add integration test

This PR includes:
- Make speed_speech an integer parameter
- Test for empty parameters too
- Add integration tests

* Improve the $speech_speed parameter handling

As requested

test/integration/targets/win_say/aliases

@@ -0,0 +1 @@
+windows/ci/group3

test/integration/targets/win_say/tasks/main.yml

@@ -0,0 +1,36 @@
+- name: Warn of impending deployment
+  win_say:
+    msg: Warning, deployment commencing in 5 minutes, please log out.
+
+- name: Using a different voice and a start sound
+  win_say:
+    msg: Warning, deployment commencing in 5 minutes, please log out.
+    start_sound_path: C:\Windows\Media\ding.wav
+    voice: Microsoft Hazel Desktop
+
+- name: Example with start and end sound
+  win_say:
+    msg: New software installed
+    start_sound_path: C:\Windows\Media\Windows Balloon.wav
+    end_sound_path: C:\Windows\Media\chimes.wav
+
+- name: Create message file
+  win_copy:
+    content: Stay calm and carry on
+    dest: C:\Windows\Temp\win_say_message.txt
+
+- name: Text from file example
+  win_say:
+    msg_file: C:\Windows\Temp\win_say_message.txt
+    start_sound_path: C:\Windows\Media\Windows Balloon.wav
+    end_sound_path: C:\Windows\Media\chimes.wav
+
+- name: Remove message file
+  win_file:
+    path: C:\Windows\Temp\win_say_message.txt
+    state: absent
+
+- name: Different spech peed
+  win_say:
+    speech_speed: 5
+    msg: Stay calm and proceed to the closest fire exit.