Feat: use git ls-tree instead of ls -a

What does this MR do and why?

Feat: use git ls-tree instead of ls -a

Pros:

• This command respects .gitignore
• This command automatically works on Windows

Cons:

• Doesn't return untracked files

Related discussions:

• duo-workflow-executor#41 (comment 2393317970)
• duo-workflow-executor!131 (comment 2395374427)

Alternative solution

1. Enhanced ls Command Security for GitIgnored Files (duo-workflow-executor!131 - closed)

• Respects .gitignore
• Doesn't work on Windows

2. Implement a separate ListFiles command

• Works on Windows
• Requires additional implementation for .gitignore