Added wrong-import-position message example (#6240)

Author: matusvalo

doc/data/messages/w/wrong-import-position/bad.py

@@ -0,0 +1,7 @@
+import os
+
+home = os.environ['HOME']
+
+import sys  # [wrong-import-position]
+
+print(f'Home directory is {home}', file=sys.stderr)

doc/data/messages/w/wrong-import-position/good.py

@@ -0,0 +1,5 @@
+import os
+import sys
+
+home = os.environ['HOME']
+print(f'Home directory is {home}', file=sys.stderr)