powershell prompt to include kubernetes context and git branch

prompt.ps1

function prompt {
    $(if (Test-Path variable:/PSDebugContext) { '[DBG]: ' } else { '' }) + 
    $(Get-KubePS1) +
    $(Get-GitPrompt) +
    $(Split-Path -Path (Get-Location) -Leaf) +
    $(if ($NestedPromptLevel -ge 1) { '>>' }) + '> '
}