Restructure bootstrap dir, fix install.sh

With bootstrap files no longer linked to config directory, we can have
an easier directory structure with less nesting for them. Install.sh
needs to use the new structure when calling its bootstrap scripts.

bootstrap/install_packages.sh

@@ -0,0 +1,92 @@
+#!/bin/bash
+#
+# Simple app bootstrapping script
+
+#=== main function ============================================================
+# NAME:         main
+# DESCRIPTION:  Display usage information for this script.
+# PARAMETERS:   see usage function
+#==============================================================================
+packages="${BOOTSTRAP_PACKAGES:-packages.csv}"
+
+main() {
+  local cmd=""
+  local ret=0
+
+  case "$1" in
+  -v | --version)
+    printf "Package bootstrap script.\n\n©Marty Oehme\n\nVersion: 0.3\n"
+    ;;
+  -h | --help)
+    printf "Usage: install [-f|--force][-v|--version][-h|--help]\n\n-f     Do not ask for any confirmations but force update and installation.\n"
+    ;;
+  -f | --force)
+    install true
+    ;;
+  *)
+    install false
+    ;;
+  esac
+  shift
+
+  $cmd "$@"
+  ret=$((ret + $?))
+  exit $ret
+}
+
+install_yay() {
+  # check for existing yay installation
+  if type yay >/dev/null 2>&1; then
+    echo "Existing yay installation found ..........................................."
+    return
+  fi
+
+  # use tmp dir to make yay
+  target=$(mktemp -d)
+  git clone https://aur.archlinux.org/yay.git "$target"
+  cd "$target" || exit
+  makepkg -si
+}
+
+update_repos() {
+  unattended="$1"
+  if "$unattended"; then
+    yay -Sqyy --noconfirm
+  else
+    yay -Syy
+  fi
+}
+
+install_packages() {
+  unattended="$1"
+  if "$unattended"; then
+    yay -Squ --noconfirm --needed - <"$packages"
+  else
+    yay -Su --needed - <"$packages"
+  fi
+}
+
+check_consent() {
+  echo "This will take a while and install many packages. Proceed [y/N]?"
+  read -r yes
+  if [[ "$yes" != y* ]]; then
+    echo "Exiting."
+    exit
+  fi
+}
+
+install() {
+  unattended=$1
+  echo "Beginning package bootstrap ..............................................."
+  if ! "$unattended"; then
+    check_consent
+  fi
+  echo "Installing yay ............................................................"
+  install_yay
+  echo "Installing apps ..........................................................."
+  update_repos "$unattended"
+  install_packages "$unattended"
+  echo "Done ......................................................................"
+}
+
+main "$@"