Add parallel execution command templates and analysis prompts

- Introduced a comprehensive set of parallel execution command templates for various architectural and functional scenarios.
- Added prompts for analyzing system architecture, implementation patterns, performance, code quality, security, and project structure.
- Created templates for planning tasks, component implementation, migration strategies, and code reviews.
- Established a unified guideline for Gemini CLI usage, including command syntax, file patterns, and template best practices.
- Initialized VSCode settings file for project configuration.1

.claude/workflows/gemini-templates/prompts/analysis/security.txt

@@ -0,0 +1,16 @@
+Analyze security implementation and potential vulnerabilities:
+
+## Required Analysis:
+1. Identify authentication and authorization mechanisms
+2. Assess input validation and sanitization practices
+3. Review data encryption and secure storage methods
+4. Evaluate API security and access control patterns
+5. Document security risks and compliance considerations
+
+## Output Requirements:
+- Security vulnerability findings with file:line references
+- Authentication/authorization pattern documentation
+- Input validation examples and gaps
+- Encryption usage patterns and recommendations
+
+Focus on identifying security gaps and providing actionable remediation steps.