The SDK belongs to the Ch∆In product, not the F∆I vendor namespace
(a future Brain client SDK would otherwise collide). Rename the Dart
package, entry library, test + example files. Also drop a private
project name from a doc comment. dart analyze: clean.
Dependents must update their dependency name + package: imports.
Signed-off-by: flemming-it <stefan.a.flemming@googlemail.com>
