Mock Device Extension

[satlead]

Create a mock device extension which should help in

1. Running Ripple without a device
2. Support E2E testing for Github Actions

Proposed Changes

1. Create a package member in device/mockDevice with the FFI layer similar to distributor/general.
2. Create a generic RippleContract for the Mock WebSocket Testing Server.
3. Create a Request Enumeration that can support
   a. Request (with/without Params) to a result
   b. Subscribe - Where there would be a successful response for the call and emit an event with a delay(configurable)
   c. Clear Request/Subscribe
4. Create a Processor for the above enumeration and add it as a RequestStreamProcessor for the Extension.
5. Within the processor start a websocket based on the Config
6. Add a example extn manifest with the mock device extension for reference