ux: Create project flow is tedious and has unnecessary steps

A week ago, the workflow to create a new project was just `coder projects create` and then select a template from the list. Now you must:

```
$ coder projects init
# select your template type, e.g. gcp-linux

$ cd gcp-linux
$ coder projects create
# ...
```

We should add a "create project from single command" workflow to the CLI.

Version: v0.2.0
OS: Windows