FEAT: Added activate script, Cleaned up dotfiles folder

- hidden files now make use of the dot- prefix
- Activate.sh can be used to activate all stow packages
- I used to append tons of paths to my PATH environment variable
    I have now changed to moving build binaries into /opt and symlinking
    the necessary binaries to /usr/bin/local. This makes all tools build
    also available as the root user
- Replaced the dmenu in i3 with rofi and a nice fitting colourscheme

install.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/zsh
 
 # install fzf 
 git clone --depth 1 https://github.com/junegunn/fzf.git /tmp/fzf-source