Add GitPython project top comments to new test modules

Author: EliahKagan

test/deprecation/test_cmd_git.py

@@ -1,3 +1,6 @@
+# This module is part of GitPython and is released under the
+# 3-Clause BSD License: https://opensource.org/license/bsd-3-clause/
+
 """Tests for static and dynamic characteristics of Git class and instance attributes.
 
 Currently this all relates to the deprecated :attr:`Git.USE_SHELL` class attribute,

test/deprecation/test_compat.py

@@ -1,3 +1,6 @@
+# This module is part of GitPython and is released under the
+# 3-Clause BSD License: https://opensource.org/license/bsd-3-clause/
+
 """Tests for dynamic and static characteristics of git.compat module attributes.
 
 These tests verify that the is_<platform> attributes are available, and are even listed

test/deprecation/test_toplevel.py

@@ -1,3 +1,6 @@
+# This module is part of GitPython and is released under the
+# 3-Clause BSD License: https://opensource.org/license/bsd-3-clause/
+
 """Tests for dynamic and static characteristics of top-level git module attributes.
 
 Provided mypy has ``warn_unused_ignores = true`` set, running mypy on these test cases

test/deprecation/test_types.py

@@ -1,3 +1,6 @@
+# This module is part of GitPython and is released under the
+# 3-Clause BSD License: https://opensource.org/license/bsd-3-clause/
+
 """Tests for dynamic and static characteristics of git.types module attributes."""
 
 import sys