Add fish, scripts and git

fish/functions/fish_right_prompt.fish

@@ -0,0 +1,27 @@
+function fish_right_prompt
+    set -l ref (git symbolic-ref HEAD ^/dev/null)
+    if test -z $ref
+        return
+    end
+    
+    git diff --no-ext-diff --quiet --exit-code ^/dev/null
+    or set -l dirty 'yes'
+
+    git diff-index --cached --quiet HEAD -- ^/dev/null
+    or set -l staged 'yes'
+
+    set_color normal
+    echo -sn '['
+
+    if set -q staged
+        set_color yellow
+    else if set -q dirty
+        set_color red
+    else
+        set_color green
+    end
+    echo -sn (string replace refs/heads/ '' -- $ref)
+    
+    set_color normal
+    echo -sn ']'
+end