Load predefined function mappings for known joysticks

### Current behaviour

When a user connects a known joystick, it simply uses the current functions mappings, regardless of the joystick model.

### Expected or desired behaviour

We should have a library of known joysticks and related functions mappings on which the community can add, modify and publish the mappings. This mappings should be auto-loaded or at least semi-auto loaded when the user connects a known input device.

### Prerequisites

- [x] I have checked to make sure that a similar request has not already been filed or fixed.

No files, tests, or entry points are named. Start by locating the existing joystick function-mapping and device-connection flow in the TypeScript application, then clarify how known-device mappings should be stored, loaded, and updated. Done means known joysticks receive their predefined mappings and the community workflow is defined.

Written by the indexing model from the issue text.