Add skills tools and enhance model integration

- Introduced new skills tools: `skills_categories`, `skills_list`, and `skill_view` in `model_tools.py`, allowing for better organization and access to skill-related functionalities.
- Updated `toolsets.py` to include a new `skills` toolset, providing a dedicated space for skill tools.
- Enhanced `batch_runner.py` to recognize and validate skills tools during batch processing.
- Added comprehensive tool definitions for skills tools, ensuring compatibility with OpenAI's expected format.
- Created new shell script `test_skills_kimi.sh` for testing skills tool functionality with Kimi K2.5.
- Added example skill files demonstrating the structure and usage of skills within the Hermes-Agent framework, including `SKILL.md` for example and audiocraft skills.
- Improved documentation for skills tools and their integration into the existing tool framework, ensuring clarity for future development and usage.

example-skill/SKILL.md

@@ -0,0 +1,70 @@
+---
+name: example-skill
+description: An example skill demonstrating the skill file format and structure
+---
+
+# Example Skill
+
+This is an example skill file that demonstrates how to create skills for the Hermes Agent.
+
+## Skill File Format
+
+Skills are markdown files with YAML frontmatter at the top:
+
+```yaml
+---
+name: your-skill-name
+description: A brief one-line description of what this skill does
+---
+```
+
+The frontmatter fields:
+- **name**: The identifier used to reference this skill (lowercase, hyphens for spaces)
+- **description**: A brief description shown when listing skills (keep under 200 chars)
+
+## Writing Effective Skills
+
+### 1. Be Specific and Actionable
+
+Good skills provide clear, actionable instructions:
+
+```
+When reviewing code:
+1. Check for security vulnerabilities first
+2. Verify error handling is comprehensive
+3. Ensure tests cover edge cases
+```
+
+### 2. Include Examples
+
+Show concrete examples of what you want:
+
+```python
+# Good: Descriptive variable names
+user_authentication_token = get_token()
+
+# Bad: Cryptic abbreviations  
+uat = gt()
+```
+
+### 3. Define When to Use
+
+Help the agent understand when this skill applies:
+
+> Use this skill when: reviewing pull requests, auditing security, or checking code quality.
+
+## Skill Categories
+
+Consider organizing skills by purpose:
+
+- **Conventions**: Coding standards, API patterns, naming rules
+- **Workflows**: Step-by-step processes for deployments, reviews, releases
+- **Knowledge**: Domain-specific information, system architecture, gotchas
+- **Templates**: Boilerplate for common tasks, response formats
+
+## Tips
+
+1. Keep the description concise - it's shown in the skills list
+2. Use headers to organize longer skills
+3. Include code examples where helpful
+4. Reference other skills if they're related