- remove unnecessary nix packages add them - ncdu, alacritty

+ bash aliases file
+ spacevim
+ username formatting for starship terminal

.bash_aliases

@@ -0,0 +1,7 @@
+alias gst='git status'
+alias ga='git add'
+alias gc='git commit -m'
+alias gush='git push'
+alias gull='git pull'
+alias gb='git branch'
+alias vim='nvim'