feat(guix_shell): Initial implementation (#4397)

* feat(guix_shell): Initial implementation (#3999)

* fix(guix_shell): Change guix nerd font icon to water buffalo emoji

* fix(guix_shell): Added guix_shell entries in preset files

* fix(guix_shell): Moved guix_shell config docs in to the correct place (alphabetically)

docs/.vuepress/public/presets/toml/bracketed-segments.toml

@@ -58,6 +58,9 @@ format = '([\[$all_status$ahead_behind\]]($style))'
 [golang]
 format = '\[[$symbol($version)]($style)\]'
 
+[guix_shell]
+format = '\[[$symbol]($style)\]'
+
 [haskell]
 format = '\[[$symbol($version)]($style)\]'
 

docs/.vuepress/public/presets/toml/nerd-font-symbols.toml

@@ -31,6 +31,9 @@ symbol = " "
 [golang]
 symbol = " "
 
+[guix_shell]
+symbol = " "
+
 [haskell]
 symbol = " "
 

docs/.vuepress/public/presets/toml/plain-text-symbols.toml

@@ -64,6 +64,9 @@ symbol = "git "
 [golang]
 symbol = "go "
 
+[guix_shell]
+symbol = "guix "
+
 [hg_branch]
 symbol = "hg "