Ignore some paths when deploying

## What

`cubejs-cli deploy` should ignore (not push) files at user-specified paths.

## Why

This is motivated by the following use-case scenarios:

- Miscellaneous files in a dirty working directory
- Dev scripts and test code which are never used at runtime

## How

A new command option `--ignore` will suffice.

```bash
cubejs-cli deploy --token=${CUBE_CLOUD_DEPLOY_TOKEN} --ignore "tests"
```

## Alternatives Considered

- A workaround exists: habitually move deploy-shy files out of the project directory.
- It would be nice if the command also ignored all paths specified by `.gitignore`. This is a bigger lift and may be considered a breaking change — build pipelines which deploy from a gitignored directory will no longer work.
- We could achieve this by introducing a `.cubeignore` file or some other config file in the project directory. Also a bigger lift than adding an `--ignore` option. Should be a non-breaking addition.