Add: custom message for deployment by deployctl

### What problem are you trying to solve?

For now, only the deployment from github can have message (the git commit message). If you like me, who prefer to deploy my project from `deployctl`, that feature is not exist. Which is annoying because if I want to know what deploy wast that, I have to open the log of every deployment and see the `console.log`. It is not fair to treat developers who not use Github.

### Describe the solution you'd like

An option `-m/--message` is the finest choice.

### Describe alternatives you've considered

Event better fallback support if the user has git repo for their project, `deployctl` can use the latest commit message as deployment message. Of course, after asking developers nicely or have the flag `--use-git-message`.

### Documentation, Adoption, Migration Strategy

_No response_

The issue names deployctl and requests a -m/--message option, with an optional --use-git-message fallback. No files, tests, or entry points are identified; start by locating deployctl's option handling and deployment-message flow. Done means deployctl accepts a custom message and displays it for the deployment.

Written by the indexing model from the issue text.