added zsh autosuggestion theming

.config/zsh/theme_dark

@@ -0,0 +1,3 @@
+#!/bin/zsh
+
+ZSH_AUTOSUGGEST_HIGHLIGHT_STYLE='fg=7'

.config/zsh/theme_light

@@ -0,0 +1,3 @@
+#!/bin/zsh
+
+ZSH_AUTOSUGGEST_HIGHLIGHT_STYLE='fg=1'