Issue Search commands in repo

[rulasg]

Once on a repo allow to search beyond the repos of a repo.

function Search-Issue
[alias(si)]

> gh search issues rulasg -R solidify-internal/clients --json title,url,assignees
[
  {
    "assignees": [
      {
        "id": "U_kgDOCEcwWw",
        "is_bot": false,
        "login": "raul-gonzalez_solidify",
        "type": "User",
        "url": "https://github.com/raul-gonzalez_solidify"
      }
    ],
    "title": "[Client] EPO",
    "url": "https://github.com/solidify-internal/Clients/issues/18"
  },
  {
    "assignees": [
      {
        "id": "U_kgDOCEcwWw",
        "is_bot": false,
        "login": "raul-gonzalez_solidify",
        "type": "User",
        "url": "https://github.com/raul-gonzalez_solidify"
      }
    ],
    "title": "[Client] CGD",
    "url": "https://github.com/solidify-internal/Clients/issues/15"
  }
]