Added tab completion

Added tab completion to sub commands for both Bash & Zsh.

New feature ('run' command)

Users can now use the 'run' command to create a transient (temporary) timer.

See the README for more information.

Minor updates

• Added the 'status' command
• Made some formatting changes
  • Removed double-quotes around variables from inside conditionals with double brackets ( [[ )
  • Shortened some of the longer lines to increase readability
  • Defined the 'text color' variables at the beginning as globals

Code formatting

Modifying some of the code to use best practices.

• Using cat to print walls of text
• Added the "info" function to use printf '%b\n' "$@" instead of echo -e
• Error messages now outputs to stderr

Removed PKGBUILD file

Removed the PKGBUILD file for the Arch User Repository as it shouldn't be in here.