Add GitHub issue and pull request templates

Adds structured templates for new agent requests, bug reports,
and pull requests to streamline contributions and ensure consistency.

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,17 @@
+## What does this PR do?
+
+<!-- Brief description of the change -->
+
+## Agent Information (if adding/modifying an agent)
+
+- **Agent Name**:
+- **Category**:
+- **Specialty**:
+
+## Checklist
+
+- [ ] Follows the agent template structure from CONTRIBUTING.md
+- [ ] Includes YAML frontmatter with `name`, `description`, `color`
+- [ ] Has concrete code/template examples (for new agents)
+- [ ] Tested in real scenarios
+- [ ] Proofread and formatted correctly