[mbauman]

Adds jh project create, which creates a project owned by you by making the same calls as the web UI's New Project dialog:

1. POST /api/v1/projects/add returns the project ID.
2. POST /api/v1/projects/create/{id} sets up the repository, cloning the upstream for imports.
3. POST /api/v1/projects/pull/{id} follows, where a 409 is fine.

jh project create my-analysis --description "Q3 study" --tag finance
jh project create MyPkg.jl --import https://github.com/me/MyPkg.jl
jh project create --resume <project-id>

• --workflow group|exclusive picks the editing workflow (default group).
• Private by default: new projects get instance_default_role: "No Access" and are not deployable. Sharing, deployments and the branch workflow are left to the web UI.
• --product takes a product name, display name or ID from the UI's product list (products.gql) and defaults to the first one.
• --import recognizes github.com, gitlab.com and bitbucket.org by name. For other hosts it detects self-hosted GitLab (X-Gitlab-Meta on GET /api/v4/version) and GitHub Enterprise (X-GitHub-Request-Id on GET /api/v3/meta), both of which answer without authentication. Anything else needs --provider, which also overrides detection. The server's NOTOKEN, NOACCESS and NOPROVIDER errors are reported as hints.
• --resume <id>: if the project is added but its repository setup fails, the error prints the ID and the --resume command, which reruns only the setup instead of creating a duplicate.
• --json prints {"project_id", "name", "owner", "product", "git_upstream_url"}.

Testing

• Unit tests cover the request body (including the JSON field names the server expects), validation of names, tags and import URLs, product matching, the add → create → pull sequence against a fake server, and error mapping.
• The e2e CLI tests check the help text and argument validation. The e2e suite still doesn't create projects on the instance.
• GitLab detection was checked against gitlab.gnome.org and gitlab.freedesktop.org, and Codeberg and example.com are rejected. GitHub Enterprise detection is tested only against a fake server.
• Not yet run against a live JuliaHub instance.

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