[git] Git subtree install option

[tsuga]

This PR enhances the existing git feature to install git/contrib/subtree by specifying to do so in the options.

    "options": {
        "version": {
            "type": "string",
            "proposals": [
                "latest",
                "system",
                "os-provided"
            ],
            "default": "os-provided",
            "description": "Select or enter a Git version."
        },
        "ppa": {
            "type": "boolean",
            "default": true,
            "description": "Install from PPA if available (only supported for Ubuntu distributions)"
        },
        "installSubtree": {
            "type": "boolean",
            "default": false,
            "description": "Install git/contrib/subtree"
        }
    },

[tsuga]

@microsoft-github-policy-service agree

[samruddhikhandale]

Hi @tsuga 👋

Thank you for taking the time to contribute this PR. Can you help me understand how you utilize git/contrib/subtree and how impactful this change will be for the community?

I understand that the git-subtree command is an alternative to git-submodule for managing project dependencies. However, we'd like more feedback before we add this feature option. Hope that makes sense to you. Thanks!

// cc @bamurtaugh

[tsuga]

Hi @samruddhikhandale
There are various pros and cons over subtree vs submodule.
You may find good explanation on the Internet.

[Karmaibringkaosanddrama]

This PR enhances the existing git feature to install git/contrib/subtree by specifying to do so in the options.

    "options": {
        "version": {
            "type": "string",
            "proposals": [
                "latest",
                "system",
                "os-provided"
            ],
            "default": "os-provided",
            "description": "Select or enter a Git version."
        },
        "ppa": {
            "type": "boolean",
            "default": true,
            "description": "Install from PPA if available (only supported for Ubuntu distributions)"
        },
        "installSubtree": {
            "type": "boolean",
            "default": false,
            "description": "Install git/contrib/subtree"
        }
    },

@

[Kaniska244]

Hello @tsuga ,

Thank you for the PR. Would you kindly add some tests to verify the git subtree feature when opted in by the user using the flag. A simple "git --version" like command isn't available for git subtree as I can see.

With Regards,
Kaniska

[tsuga]

@Kaniska244 Thank you for your attention to this PR!
Indeed, git subtree --version does not exist. However, if subtree is installed, git subtree --help should return the help text. If not installed, git subtree --help will raise an error git: 'subtree' is not a git command.

Do you think git subtree --help is enough? If you can agree, I will add the line as a test.

[Kaniska244]

@Kaniska244 Thank you for your attention to this PR! Indeed, git subtree --version does not exist. However, if subtree is installed, git subtree --help should return the help text. If not installed, git subtree --help will raise an error git: 'subtree' is not a git command.

Do you think git subtree --help is enough? If you can agree, I will add the line as a test.

Hello @tsuga ,

Thank you for the response. Sure if git subtree -h or git subtree --help works, it could be used in the test scripts. Kindly proceed with the change & let us check further.

With Regards,
Kaniska