Add changelog

Author: Luc45

docs/changelogs/0.8.0.md

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+### QIT CLI 0.8.0 Release Notes
+
+#### What’s New
+
+##### Enhanced Orchestration in Custom End-to-End (E2E) Tests
+
+- **Optimized Database Lifecycle Management**  
+  Improved the database (DB) lifecycle handling during Custom E2E tests, particularly for compatibility testing involving multiple plugins.
+
+- **Streamlined Lifecycle Steps**  
+  The updated lifecycle now follows these steps:
+  1. **Shared Setup Execution**  
+     Execute setups that are common to all plugins.
+  2. **Database Export**  
+     Export the current state of the DB.
+  3. **Per-Plugin Operations**  
+     For each plugin, perform the following:
+     - **DB Import**  
+       Import the exported DB state.
+     - **Plugin-Specific Setup**  
+       Execute setups unique to the plugin.
+     - **Run Tests**  
+       Conduct the plugin-specific tests.
+     - **Plugin-Specific Teardown**  
+       Execute teardowns unique to the plugin.
+  4. **Shared Teardown Execution**  
+     Execute teardowns that are common to all plugins.
+
+- **Flexible State Management**  
+  This update allows you to:
+  - **Share State Across Plugins:** Define shared states, such as establishing connections to external services or removing onboarding wizards during the shared setup phase.
+  - **Isolate Plugin-Specific Configurations:** Customize setups unique to each plugin, like installing and activating a custom theme required by a specific plugin.
+
+#### Documentation
+
+For a detailed understanding of the new lifecycle management, please refer to our [Understanding the Lifecycle](https://qit.woo.com/docs/custom-tests/understanding-lifecycle) documentation.
+
+#### Support and Feedback
+
+If you have any questions, encounter issues, or have suggestions, please visit our [GitHub Issues Page](https://github.com/woocommerce/qit-cli/issues). Your feedback is invaluable and helps us continuously enhance the QIT CLI tool.