zsh: add first revision of zshrc

Initial commit of zshrc file.

Includes support for:
 - git prompt
 - up/down arrow for hist searching
 - some prepared tmux support

Signed-off-by: Petter Mabäcker <petter@technux.se>
vim: add first revision of vimrc

Initial of vimrc.

Includes for example:
 - key bind for script comments (#)
 - key bind for c-code comments (/* sometext */)
 - basic keybind for common functions

Signed-off-by: Petter Mabäcker <petter@technux.se>