Add "save" command

Add "save" command which saves the changes to the current
branch as a commit
Add new command "save" to git-elegant-commands

src/main/git-elegant-commands

@@ -13,4 +13,5 @@ default() {
     echo "clear-local"
     echo "configure"
     echo "check"
+    echo "save"
 }

src/main/git-elegant-save

@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+set -e
+
+default(){
+    boxtee git add --interactive
+    git elegant check --staged
+    boxtee git commit
+}

src/test/git-elegant-commands.bats

@@ -20,7 +20,8 @@ teardown() {
   [ "${lines[8]}" = "clear-local" ]
   [ "${lines[9]}" = "configure" ]
   [ "${lines[10]}" = "check" ]
-  [ ${#lines[@]} -eq 11 ]
+  [ "${lines[11]}" = "save"  ]
+  [ ${#lines[@]} -eq 12 ]
 }
 
 @test "'commands': default exit code is 0" {