Prepare for OSS release v0.0.1

Version updates:
- Set version to 0.0.1 across all files
- Update CLI banner, SARIF output, and documentation

New files:
- LICENSE: MIT license
- CHANGELOG.md: Initial changelog with all features
- CONTRIBUTING.md: Contribution guidelines

composer.json enhancements:
- Add version, keywords, homepage, support URLs
- Add authors section
- Add require-dev for PHPUnit

README.md updates:
- Update repository URLs to security-linter/php-laravel
- Update Docker image references

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

bin/security-lint

@@ -35,7 +35,7 @@ use SecurityLinter\I18n\Messages;
  */
 class SecurityLintCLI
 {
-    private const VERSION = '1.0.0';
+    private const VERSION = '0.0.1';
 
     /** @var array Default directories/patterns to exclude */
     private const DEFAULT_EXCLUDES = [