[BUG] Git submodule not synchronized.

[fangjunzhou]

Describe the bug
When I use the git submodule inside the Package directory, changes are not synchronized through projects.

To Reproduce
Steps to reproduce the behavior:

1. Use git submodule to add a submodule inside Package dir.
2. Make some changes to the submodule in the parent project.
3. The package in the child project will not change.

Expected behavior
Ideally, all the changes should be synchronized. I'm not sure it is because there's some limitation with symbol links for submodules.

Screenshots/Video
None

Enviroment (please complete the following information):

• Unity Editor Version: Windows 2020.3.25f1
• ParrelSync Version: 1.5.0
• OS Version: Windows 10 21H2

Additional context
None