implement auto-onboarding for goose

[feloy]

The file ~/.config/goose/config.yaml contains the goose config.

Goose asks for telemetry if GOOSE_TELEMETRY_ENABLED is not defined in this file.

The auto-onboarding will set the value GOOSE_TELEMETRY_ENABLED: false in the file if the value is not defined.

If users prefer to enable telemetry, they can set GOOSE_TELEMETRY_ENABLED: true in ~/.kortex-cli/config/goose/.config/goose/config.yaml:

GOOSE_MODEL: "claude-sonnet-4-6"
GOOSE_TELEMETRY_ENABLED: true