Windows: Add "special" parameter types to docs (#42853)

* Windows: Add special parameter types

Adding explicit parameter types now exposes this information in the
module documentation, and proves really helpful.

We only do this for non-string types as strings, mostly because strings
are implicit.

PS We also make copyright statements consistent and use #Requires for
explicit library imports

* Type "string" must be type "str"

* A few more Copyright corrections

* More fixes

* Don't add file encoding to Powershell files

* Don't add missing interfacetypes parameter

Otherwise CI demands an incorrect version_added

* Small fix

lib/ansible/modules/windows/win_unzip.py

@@ -28,10 +28,12 @@ options:
     description:
       - File to be unzipped (provide absolute path).
     required: yes
+    type: path
   dest:
     description:
       - Destination of zip file (provide absolute path of directory). If it does not exist, the directory will be created.
     required: yes
+    type: path
   delete_archive:
     description:
       - Remove the zip file, after unzipping.
@@ -47,6 +49,7 @@ options:
   creates:
     description:
       - If this file or directory exists the specified src will not be extracted.
+    type: path
 notes:
 - This module is not really idempotent, it will extract the archive every time, and report a change.
 - For extracting any compression types other than .zip, the PowerShellCommunityExtensions (PSCX) Module is required.  This module (in conjunction with PSCX)