command agent mode allow for github copilot

[Admin]

"github.copilot.chat.agent.terminal.allowList": {
  "echo": true,
  "cd": true,
  "ls": true,
  "cat": true,
  "pwd": true,
  "Write-Host": true,
  "Set-Location": true,
  "Get-ChildItem": true,
  "Get-Content": true,
  "Get-Location": true
},
"github.copilot.chat.agent.terminal.denyList": {
  "rm": true,
  "rmdir": true,
  "del": true,
  "kill": true,
  "curl": true,
  "wget": true,
  "eval": true,
  "chmod": true,
  "chown": true,
  "Remove-Item": true
},