winroom: add 7zip file associations

roles/winroom/tasks/7zip.yml

@@ -1,3 +1,18 @@
 - name: Install 7-zip
   win_chocolatey:
     name: 7zip
+  register: install
+
+- when: install.changed
+  block:
+    - name: Create 7-zip filetype
+      win_command: cmd.exe /c ftype 7-zip=%ProgramFiles%\7-zip\7zFM.exe
+    
+    - name: Associate 7-zip with archive filetypes
+      win_command: cmd.exe /c assoc .{{ item }}=7-zip
+      loop:
+        - gz
+        - tar
+        - targz
+        - rar
+        - 7z