feat(git-commit): Use git-dash commands

Issue: ohmyzsh/ohmyzsh#12627

This commit refactors the prior implementation which used git aliases and modified .gitconfig. This implementation uses proper git-dash commands, which are all just symlinks to one handler - omz_git_commit.

plugins/git-commit/git-commands/git-build

@@ -0,0 +1 @@
+./omz_git_commit

plugins/git-commit/git-commands/git-chore

@@ -0,0 +1 @@
+./omz_git_commit

plugins/git-commit/git-commands/git-ci

@@ -0,0 +1 @@
+./omz_git_commit

plugins/git-commit/git-commands/git-docs

@@ -0,0 +1 @@
+./omz_git_commit

plugins/git-commit/git-commands/git-feat

@@ -0,0 +1 @@
+./omz_git_commit

plugins/git-commit/git-commands/git-fix

@@ -0,0 +1 @@
+./omz_git_commit

plugins/git-commit/git-commands/git-perf

@@ -0,0 +1 @@
+./omz_git_commit

plugins/git-commit/git-commands/git-refactor

@@ -0,0 +1 @@
+./omz_git_commit

plugins/git-commit/git-commands/git-rev

@@ -0,0 +1 @@
+./omz_git_commit

plugins/git-commit/git-commands/git-style

@@ -0,0 +1 @@
+./omz_git_commit

plugins/git-commit/git-commands/git-test

@@ -0,0 +1 @@
+./omz_git_commit

plugins/git-commit/git-commands/git-wip

@@ -0,0 +1 @@
+./omz_git_commit

plugins/git-commit/git-commands/omz_git_commit

@@ -0,0 +1,34 @@
+#!/usr/bin/env zsh
+
+_omz_git_commit() {
+  0=${(%):-%x}
+  if [[ "$0" != */git-* ]]; then
+    echo >&2 "Expecting command named git-foo. Got '$0'."
+    return 1
+  fi
+
+  local _type="${0##*/git-}"
+  local _scope _attention _message
+  while [ $# -ne 0 ]; do
+  case $1 in
+    -s | --scope )
+      if [ -z $2 ]; then
+        echo >&2 "Missing scope!"
+        return 1
+      fi
+      _scope="$2"
+      shift 2
+      ;;
+    -a | --attention )
+      _attention="!"
+      shift 1
+      ;;
+    * )
+      _message="${_message} $1"
+      shift 1
+      ;;
+  esac
+  done
+  git commit -m "${_type}${_scope:+(${_scope})}${_attention}:${_message}"
+}
+_omz_git_commit "$@"