feat(commit): add optional diff parameter for commit command

- Introduced an optional 'diff' parameter to allow users to specify diff content directly.
- Updated the command to use the provided diff option if available, enhancing flexibility.
- Ensured that if no diff is specified, the command defaults to the previous behavior.

Author: ityaozm@gmail.com

app/Commands/CommitCommand.php

@@ -66,7 +66,7 @@ public function handle(): void
             // Ensure git is installed and the current directory is a git repository.
             $this->createProcess(['git', 'rev-parse', '--is-inside-work-tree'])->mustRun();
 
-            $cachedDiff = $this->createProcess($this->getDiffCommand())->mustRun()->getOutput();
+            $cachedDiff = $this->option('diff') ?: $this->createProcess($this->getDiffCommand())->mustRun()->getOutput();
             if ('' === $cachedDiff) {
                 throw new TaskException('There are no cached files to commit. Try running `git add` to cache some files.');
             }
@@ -234,6 +234,12 @@ protected function configure(): void
                 InputOption::VALUE_NONE,
                 'Only generate message without commit',
             ),
+            new InputOption(
+                'diff',
+                null,
+                InputOption::VALUE_OPTIONAL,
+                'Specify diff content',
+            ),
         ]);
     }