📌 Git Version Control on MacOS

This program is developed based in MacOS.
- It also works in Windows, but the UI may break or cause unexpected errors.
The goal of this program is to provide a simple GUI-based git repository management service.
- Feature #1: File explorer
  
  The service provides a GUI for browsing files and directories on your computer.
  - The file browsing starts from the root directory of the computer of the most recently visited directory.
  - All files and directories included in the current directory are displayed with their icon, name, and extension.
  - A user can browse a directory by double clicking its icon.
- Feature #2: Git repository creation
  
  The service supports to turn any local directory into a git repository
  - It provides a menu for a git repository creation only if a current directory in the browser is not managed by git yet.
  - Once the repository creation is requested, the service creates a new git repository for the current working directory.
- Feature #3: Version controlling
  
  The service supports the version controlling of a git repository
  - Files with different status have a different mark on their icon.
  - It provides a different menu depending on the status of a selected file.
  - This program can execute the following git command
    - git init
    - git add
    - git commit
    - git mv
    - git rm
    - git rm —cached
    - git restore
    - git restore —staged
- Feature #4: Branch management
  
  The service supports the branch management of a git repository
  - This program supports the following functionalities relate with branches.
    - git branch {branch_name}
    - git branch -D {branch_name}
    - git branch -m {old_name} {new_name}
    - git checkout {branch_name}
    - git merge {branch_name}
- Feature #5: Branch merge
  
  The service supports to merge two branches
  - It provides a menu to merge a target branch to the current branch.
    - It provides branch list to user and asks to select one of the branches
    - It then attempts to merge the selected branches
      - If success, It provides the user with a success message
      - Otherwise, It provides the user with an error message
        
        If the merge is failed due to conflict, it provides the user with unmerged paths and simply aborts the merge process
- Feature #6: Commit history
  
  The service shows the commit history of a project in the form of a simplified graph
  - Each commit object in the graph includes its author name and message.
  - If a user chooses a commit object, then it provides the detailed information about the commit
- Featire #7: Git clone from Github
  
  The service provides a functionality to clone a git repository from Github to local
  - When cloning public repositories, just ask a user a Github repository address.
  - When cloning private repositories, ask a user a Github repository address, ID, and access token.
    - The ID and token infomation are stored in secrets.json for the future use.