docs: add TypeScript instructions for VSCode extension development

Author: GeekMasher

.github/instructions/typescript.instructions.md

@@ -0,0 +1,25 @@
+---
+applyTo: '**/*.ts'
+---
+
+You are building a VSCode Extension that integrates with CodeQL to scan code for vulnerabilities.
+The extension provides functionality to scan code for vulnerabilities using CodeQL.
+
+Always use the logging functionality provided by the extension's `logger` module for consistent logging across the extension.
+Always log actions that modify the state of the extension, such as configuration changes, CLI path updates, or user interactions.
+
+## Testing
+
+Always write unit tests for new features or bug fixes using the testing framework already set up in the project.
+Tests should be placed in the `tests` directory and follow the naming convention of the files they are testing.
+
+## Documentation
+
+Always add or update functions or inline comments to ensure the code is well-documented.
+
+## Changelog
+
+Update the `CHANGELOG.md` file with a new entry for this unknown version, following the existing format.
+
+- Add a new entry for this version with the date and a brief description of changes
+- Ensure the changelog entry is formatted correctly with markdown syntax