Add more settings to pgPlugin

Related to #1 Add support for hostname, user, password, and port parameters to the `pgPlugin`. * **src/plugins/pgPlugin.tsx** - Add input fields for hostname, user, password, and port in the `PgComponent`. - Update the `parse` function to extract hostname, user, password, and port parameters from the command. - Update the `compile` function to include hostname, user, password, and port parameters in the command. * **src/plugins/pgPlugin.test.tsx** - Add tests for hostname, user, password, and port parameters in the `pgPlugin`. - Update existing tests to include hostname, user, password, and port parameters. --- For more details, open the [Copilot Workspace session](https://copilot-workspace.githubnext.com/williamcotton/guish/issues/1?shareId=b1a3cd45-2ad7-45b8-ae5c-bace7789ee01).