Add dock type code 18 for Saros 10

[lsmarsden]

My Roborock Saros 10 is showing a warning log in Home Assistant:

Logger: roborock.code_mappings
Source: runner.py:154
First occurred: 17:29:15 (1 occurrences)
Last logged: 17:29:15

Missing RoborockDockTypeCode code: 18 - defaulting to 'unknown'

Implemented a similar fix to #343 - Adding the code to RoborockDockTypeCode.

[Kranzes]

Were you able to connect to the Saros 10 via the local client od just the cloud client?