feat(scripts): import more scripts from legacy codebase

Plus, in this commit:
* updated most of shell rc and then some

Signed-off-by: Andrei Jiroh Halili <ajhalili2006@gmail.com>

bin/fix-wrong-emails

@@ -0,0 +1,25 @@
+#!/bin/bash
+
+if [[ $1 != "" ]]; then
+    git filter-branch --env-filter '
+    WRONG_EMAIL=$1
+    NEW_NAME="Andrei Jiroh Eugenio Halili"
+    NEW_EMAIL="andreijiroh@madebythepins.tk"
+
+    if [ "$GIT_COMMITTER_EMAIL" = "$WRONG_EMAIL" ]
+    then
+        export GIT_COMMITTER_NAME="$NEW_NAME"
+        export GIT_COMMITTER_EMAIL="$NEW_EMAIL"
+    fi
+    if [ "$GIT_AUTHOR_EMAIL" = "$WRONG_EMAIL" ]
+    then
+        export GIT_AUTHOR_NAME="$NEW_NAME"
+        export GIT_AUTHOR_EMAIL="$NEW_EMAIL"
+    fi
+    ' --tag-name-filter cat -- --branches --tags
+else
+    echo "Usage $0 <wrong-email@host.me>"
+    echo "Easily fix wrong emails in Git commit history. It is advised to use this script only"
+    echo "on non-public commits, since this might be distaterous for forks to pull any changes"
+    echo "in the public commits."
+fi

bin/open-editor

@@ -0,0 +1,92 @@
+#!/bin/env bash
+
+# SPDX-License-Identifier: MPL-2.0
+# An bloody script for opening text editors from the command line via $EDITOR and
+# command flags, work in progress and probably abandoned.
+
+# shellcheck disable=SC2034
+VSCODE_PATH=$(command -v code) # TODO: Add PATH detection for VS Code Desktop+Server/OpenVSCode Server/VSCodium/code-server
+NANO_PATH=$(command -v nano)
+VI_PATH=$(command -v vi) # maybe neovim?
+OPEN_EDITOR_LOCKFILE=$HOME/.dotfiles/config/open-editor
+
+if [[ $1 == "" ]]; then
+    echo "open-editor: Want to learn more how to use me? Use the '--help' flag to see the docs."
+    exit
+fi
+
+# Stack Overflow: https://stackoverflow.com/questions/7069682/how-to-get-arguments-with-flags-in-bash#21128172
+while test $# -gt 0; do
+  case "$1" in
+    -h|--help)
+      echo "$0 - shortcut to open editors within and from command line"
+      echo "By default, the script will attempt to guess what text editor to use as much"
+      echo "as possible. You can lock with the ~/.dotfiles/config/open-editor file."
+      echo
+      echo "$0 [options] filename"
+      echo " "
+      echo "options:"
+      echo "-h, --help                show brief help"
+      echo "-c, --use-code            use Visual Studio Code, with the 'wait' flag"
+      echo "-n, --use-nano            use GNU Nano"
+      echo "--lockfile                Generate a lockfile within your home directory"
+      echo "                          or edit if found."
+      exit 0
+      ;;
+    -c|--use-code)
+      shift
+      echo "open-editor: Firing up your editor, please wait..."
+      sleep 3
+      if test $# -gt 0; then
+        # shellcheck disable=SC2086
+        code --wait $1
+      else
+        echo "error: no file specified, aborting..."
+        exit 1
+      fi
+      shift
+      ;;
+    -n|--use-nano)
+      shift
+      echo "open-editor: Firing up your editor, please wait..."
+      sleep 3
+      if test $# -gt 0; then
+        # shellcheck disable=SC2086
+        nano $1
+        exit
+      fi
+      shift
+      ;;
+    --lockfile)
+      shift
+      if test $# -gt 0; then
+        export OUTPUT=$1
+      else
+        echo "no output dir specified"
+        exit 1
+      fi
+      shift
+      ;;
+    -*)
+      echo "open-editor: Unsupported flag, edit the script file to customize."
+      exit 1
+      ;;
+  esac
+done
+
+if [[ $VSCODE_PATH != "" ]]; then
+  echo "open-editor: Firing up your editor, please wait..."
+  sleep 3
+  code --wait "$1"
+  exit
+elif [[ $NANO_PATH != "" ]]; then
+  echo "open-editor: Firing up your editor, please wait..."
+  sleep 3
+  nano "$1"
+  exit
+else
+  echo "open-editor: Firing up your editor, please wait..."
+  sleep 3
+  vi "$1"
+  exit
+fi

bin/setup-chroot

@@ -0,0 +1,36 @@
+#!/usr/bin/bash
+
+# Chroot command is optional and assume login binary
+CHROOT_COMMAND=${2:-"/usr/bin/login"}
+TARGET_DIR=$1
+
+if [[ $TARGET_DIR == "" ]]; then
+  echo "Usage: $0 TARGET_DIR [CHROOT_COMMAND]"
+  exit 1
+fi
+
+if [ $EUID != "0" ]; then
+  echo "error: Must be root to proceed!"
+  exit 1
+fi
+
+echo "===> Mounting required parts for chroot operation..."
+mount -o bind /dev "$TARGET_DIR/dev"
+mount -t proc none "$TARGET_DIR/proc"
+mount -o bind /sys "$TARGET_DIR/sys"
+echo "     Kernel and device mount setup done!"
+sleep 3
+
+if [[ -f "$TARGET_DIR/setup-chroot-env.sh" ]]; then
+   echo "===> Preparing chroot environment..."
+  if ! bash "$TARGET_DIR/setup-chroot-env.sh"; then
+     echo "!    Chroot env setup failed, please proceed at your own risk."
+  else
+     echo "     Setup done!"
+  fi
+  sleep 3
+fi
+
+echo "===> Teleporting to the chroot environment in 3 seconds..."
+sleep 3
+exec chroot "$TARGET_DIR" ${CHROOT_COMMAND}

bin/update-discord

@@ -0,0 +1,8 @@
+#!/bin/bash
+set -e
+
+# An script to automate upgrading Discord via the deb download link.
+# TODO:Implement checks and flags to support for rpms and tar.gz setups
+
+wget "https://discord.com/api/download?platform=linux&format=deb" -O /tmp/discord-linux-amd64.deb
+sudo apt install /tmp/discord-linux-amd64.deb