Implement Display and Debug traits for BLERemoteCharacteristic & BLERemoteService

[oleander]

This allows for easier debugging when working with clients. Debug ({:?}) now includes the most valuable fields, and display ({}) consists of the uuid, and, in the case of the characteristic, properties.

Here's an example:

I (4039) ble_client: (display) BLERemoteService[0x1812]
I (4039) ble_client: (debug) BLERemoteService { uuid: 0x1812, start_handle: 24, end_handle: 47, characteristics: Some([0x2a4e, 0x2a4d, 0x2a4d, 0x2a4d, 0x2a4b, 0x2a22, 0x2a32, 0x2a4a, 0x2a4c]) }
I (4059) NimBLE: GATT procedure initiated: discover all characteristics;
I (4069) NimBLE: start_handle=48 end_handle=65535
I (4829) ble_client: (display) BLERemoteCharacteristic[f3641401-00b0-4240-ba50-05ca45bf8abc]
I (4829) ble_client: (debug) BLERemoteCharacteristic { uuid: f3641401-00b0-4240-ba50-05ca45bf8abc, service: Some(f3641400-00b0-4240-ba50-05ca45bf8abc), handle: 50, end_handle: 0, properties: GattCharacteristicProperties(READ) }

I updated the ble_client example to include the change, but I'm unsure if it adds anything to the example.

[oleander]

My free quota for GitHub actions is met so have rerun the CI when it's restored. I'll try again in 24h.

[taks]

Thanks.

Currently, esp-idf version 4.4 seems to have a compile error.
I will merge because of CI goes through in other versions.