Add path to prompt

[vinc]

This PR introduce a second line to the shell prompt displaying the current working directory in the style of Pure for ZSH.

[vinc]

The ~ symbol was modified in the font that MOROS is using from the ZAP Group with the help of psftools to display it in the middle of the line height instead of the top.

Installation of the tool:

export tool=psftools-0.5.1
curl -s https://tset.de/downloads/$tool.tar.gz > $tool.tar.gz
tar xvf $tool.tar.gz
cd $tool
make

Modification of the font:

export font=zap-light-8x16
curl -s https://www.zap.org.au/projects/console-fonts-zap/src/zap-light16.psf > $font.psf
./psfd $font.psf > $font.txt
for i in 1 2 3 4 5
do
  sed -i "2162 d" $font.txt
  sed -i "2148 i ........" $font.txt
done
./psfc $font.txt > $font.psf