feat: copy type

[mylesmmurphy]

This pull request introduces several enhancements to the vscode-extension package, focusing on adding new commands and improving the functionality of existing ones. The most important changes include adding new commands for copying prettified TypeScript types, updating the package.json to include these new commands and their associated menus, and refactoring the registerCommands function to handle the new commands.

Enhancements to commands:

• Added new commands prettify-ts.copyPrettifiedType and prettify-ts.fullCopyPrettifiedType for copying prettified TypeScript types.
• Updated package.json to include new commands and their associated menus under the "Prettify TS" category.

Refactoring and improvements:

• Refactored registerCommands function in commands-provider.ts to include the new copy commands and handle their registration. [1] [2]
• Simplified string concatenation in registerHoverProvider function in hover-provider.ts for better readability.