Add --print-file-map option

This causes the script to not perform the operation, but simply print
the self._file_map dictionary of files to rename (this is useful for
debugging the file-moving logic, especially with combinations of
--path and --except options).

Signed-off-by: David Horstmann <david.horstmann@arm.com>

Author: davidhorstmann-arm

tools/bin/mbedtls-move-to-framework

@@ -284,6 +284,9 @@ def main() -> int:
                         help='Name of the new branch create in the framework repo')
     parser.add_argument('--dst-base-branch', default=None, required=False,
                         help='Base branch in the framework repo to make changes from')
+    parser.add_argument('--print-file-map', action='store_true',
+                        help='Don\'t perform the move, just print out'
+                             'the file map created (used for debugging)')
     args = parser.parse_args()
 
     file_map = {}
@@ -310,7 +313,11 @@ def main() -> int:
     for e in args.file_exceptions:
         file_mover.add_exception(e)
 
-    file_mover.move_files()
+    if args.print_file_map:
+        for k, v in file_mover._file_map.items():
+            print(f'{k}: {v}')
+    else:
+        file_mover.move_files()
 
     return 0