Add GoE test scripts covering core commands and Git operations

[iteyelmp]

This PR introduces end-to-end test scripts for GoE, covering all basic GoE commands as well as essential Git operations. The tests include repository initialization, branch creation, commits, pushes (including force and non-fast-forward scenarios), merges, fetches, and clone verification. These scripts ensure the correct integration of GoE with Git and provide a stable foundation for future protocol testing.

Preparation before execution:
Create a .env file in the root directory and configure your local wallet password in the file, such as: GOE_TEST_PASSWORD=12345678

Execute the command:

1. yarn build
2. node test/test.mjs

[qzhodl]

Two questions:

• How to run the e2e test, e.g., what is the command? It should be included in the PR description
• Since this is the last PR before releasing a new release, what is the testing result for the manual test part? e.g.:
  • Vitalik blog uploading
  • Mac / Linux / Win coverage