Added option to disable right prompt

By setting `set -g $theme_right_prompt = no` the right prompt will be hidden.

README.md

@@ -91,6 +91,7 @@ set -g theme_nerd_fonts yes
 set -g theme_show_exit_status yes
 set -g default_user your_normal_user
 set -g theme_color_scheme dark
+set -g theme_right_prompt yes
 ```
 
 **Title options**
@@ -104,6 +105,7 @@ set -g theme_color_scheme dark
 - `theme_display_vagrant`. This feature is disabled by default, use `yes` to display Vagrant status in your prompt. Please note that only the VirtualBox and VMWare providers are supported.
 - `theme_show_exit_status`. Set this option to yes to have the prompt show the last exit code if it was non_zero instead of just the exclamation mark.
 - `theme_git_worktree_support`. If you do any git worktree shenanigans, setting this to `yes` will fix incorrect project-relative path display. If you don't do any git worktree shenanigans, leave it disabled. It's faster this way :)
+- `theme_right_prompt`. Use `no` to remove the right side prompt.
 
 **Color scheme options**
 

fish_prompt.fish

@@ -35,6 +35,7 @@
 #     set -g theme_show_exit_status yes
 #     set -g default_user your_normal_user
 #     set -g theme_color_scheme dark
+#     set -g theme_right_prompt yes
 
 # ===========================
 # Helper methods

fish_right_prompt.fish

@@ -37,6 +37,8 @@ function __bobthefish_timestamp -S -d 'Show the current timestamp'
 end
 
 function fish_right_prompt -d 'bobthefish is all about the right prompt'
+  [ "$theme_right_prompt" = "no" ]; and return
+
   set -l __bobthefish_left_arrow_glyph \uE0B3
   if [ "$theme_powerline_fonts" = "no" ]
     set __bobthefish_left_arrow_glyph '<'