Adds two functions for instantiating dotfile management with git

dotfiles.ps1

# Set-ExecutionPolicy RemoteSigned -scope CurrentUser
# iwr -useb https://gist.githubusercontent.com/bowmanjd/14d5df511548a39cd5c53dff4f3df3f5/raw/61ac0e7b2298789bc4b35d988597989c15dadf62/dotfiles-ps.ps1 | iex

function dtfnew
{
  Param ([string]$repo)
  git init -b base
  git remote add origin $repo

  # Uncomment one of the following 3 lines
  git config --local status.showUntrackedFiles no
  # echo '/**' >> .git/info/exclude
  # echo '/**' >> .gitignore; git add -f .gitignore

  echo "Please add and commit additional files, then run"
  echo "git push -u origin base"
}

function dtfrestore {
  Param ([string]$repo)
  git init -b base
  git remote add origin $repo

  # Uncomment one of the following 2 lines unless repo has '/**' line in a .gitignore
  git config --local status.showUntrackedFiles no
  # echo '/**' >> .git/info/exclude

  git fetch --set-upstream origin base

  git switch --no-overwrite-ignore base
  if (-not $?) {
    echo "Deal with conflicting files, then run (possibly with -f flag if you are OK with overwriting)`ngit switch base"
  }
}