move dependency to "imports" code action

[scarf005]

Is your feature request related to a problem? Please describe.

to make managing dependencies in config file easier:

Describe the solution you'd like

import { Command } from "jsr:@cliffy/[email protected]"
                         ^ move dependency to imports

then

import { Command } from "@cliffy/command"

{
  "imports": {
    "@cliffy/command": "jsr:@cliffy/[email protected]"
    // ^ dependency is moved to imports in deno.json
  }
}