lk cli: Add arg to set a track name

[haffi-mazhar-oxa]

Could be useful to have the ability to set a track name when publishing with lk cli. Unless I missed something, I think there's no option for this currently. This can be useful for subscriber clients to identify the media track

i.e

lk room join --api-key={key} --api-secret={secret} --url={lk_url} --identity=video-test --room test-room --publish h264://127.0.0.1:5004 --fps 10
2025-08-28T09:04:26.118+0100	INFO	lk	lk/room.go:981	connected to room	{"room": "test-room"}
2025-08-28T09:04:26.135+0100	INFO	lk	v2@v2.9.3-0.20250816083130-d708c54efc7e/localparticipant.go:138	published track	{"name": "", "source": "CAMERA", "trackID": "TR_VCtoEeEigzVuNf"}
2025-08-28T09:04:26.228+0100	INFO	lk	v2@v2.9.3-0.20250816083130-d708c54efc7e/room.go:991	handling subscribed quality update	{"trackID": "TR_VCtoEeEigzVuNf", "mime": "", "subscribedQualityUpdate": {"trackSid": "TR_VCtoEeEigzVuNf", "subscribedQualities": [{"quality": "LOW", "enabled": true}, {"quality": "MEDIUM", "enabled": true}, {"quality": "HIGH", "enabled": true}], "subscribedCodecs": [{"codec": "h264", "qualities": [{"quality": "LOW", "enabled": true}, {"quality": "MEDIUM", "enabled": true}, {"quality": "HIGH", "enabled": true}]}]}}
finished writing
2025-08-28T09:04:36.072+0100	INFO	lk	v2@v2.9.3-0.20250816083130-d708c54efc7e/localparticipant.go:403	unpublished track	{"name": "", "trackID": "TR_VCtoEeEigzVuNf"}

See log:

published track	{"name": "", "source": "CAMERA", "trackID": "TR_VCtoEeEigzVuNf"}