checkpoint:
- support creating and using serialized session descriptions
- cleanup built-in support
- add `builtIns` command
- start work on improving the `getting started` experience
- start work on `help` and `updateClient` commands
checkpoint ... eliminating the need to any custom workspace in Pharo
image ...just console workspace:
- add OBCustomSessionDescription class>>seaside with default session
- `help` writeup
- `whatsNew` command
- `sessionDescription` command (restored)
- `script` command
- `TDShell open` support