chore(justfile):add install recipe

[saku3]

Description

Because having an install command is convenient, add an install recipe to the justfile.

Type of Change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Refactoring (no functional changes)
• Performance improvement
• Test updates
• CI/CD related changes
• Other (please describe):

Add an install recipe to the justfile.

Testing

• Added new unit tests
• Added new integration tests
• Ran existing test suite
• Tested manually (please provide steps)

$ just install
install -D -m 0755 /home/ubuntu/workspace/youki/youki "${PREFIX-/usr/local/sbin}/youki"

Related Issues

Fixes #

Additional Context