feat(Nushell): trancate diractory path to git root

nushell/modules/pj_zoxide.nu

@@ -59,6 +59,23 @@ def --env --wrapped __zoxide_zi [...rest:string] {
   cd $'(zoxide query --interactive -- ...$rest | str trim -r -c "\n")'
 }
 
+# Jump to git repository root when currently inside a repository.
+def --env __zoxide_zg [] {
+  if (which ^git | is-empty) {
+    return
+  }
+
+  let top = (^git rev-parse --show-toplevel | complete)
+  if ($top.exit_code != 0) {
+    return
+  }
+
+  let root = ($top.stdout | str trim -r -c "\n")
+  if ($root != "") {
+    cd $root
+  }
+}
+
 # =============================================================================
 #
 # Commands for zoxide. Disable these using --no-cmd.
@@ -66,6 +83,7 @@ def --env --wrapped __zoxide_zi [...rest:string] {
 
 export alias z = __zoxide_z
 export alias zi = __zoxide_zi
+export alias zg = __zoxide_zg
 
 # =============================================================================
 #