Feat: Add gltest init command

[danieljrc888]

Closes DXP-218

What

• Added gltest init <dir> to initialize a template proyect
• Added sample project
• Integrate Typer as the cli engine

.
├── contracts
│   └── storage.gpy
├── README.md
└── test
    └── test_storage.py

Testing

Try the following commands

pip install .
gltest init --> It will create the sample project in the current directory (By default)
gltest init -o sample --> It will create the sample project in the current directory
gltest init -o sample --> If the directory exists and is not empty, it will show an error in the console

[linear]

DXP-218 Implement gltest init command

Similar to hardhat, the GenLayer Testing Suite should implement the gltest init command to create a sample project to get started

[danieljrc888]

The GenLayer CLI is implementing this feature genlayerlabs/genlayer-cli#196