feat(LayoutPredictor): Introduce black-listed classes which are filtered out from the response. (#26)

Refactor the demo app to draw all recognized items.

fix(Tag_Transformer): Fix the initialization of Tag_Transformer encoder.
Enable the AggProfiler in the unit tests.

feat(AggProfiler): Enable memory monitoring (RSS) in AggProfiler. Clean up unused code.

Signed-off-by: Nikos Livathinos <[email protected]>

Author: nikos-livathinos