Design and implementation of sidebar panels options and filters

[martinscooper]

Is your feature request related to a problem?

The need exist for filtering and adding options on the sidebar panels. The UX design of those additions should be so that the same or similar aspect is present through all the sidebar panels.

The following are the options and filters that could be added:

• On the search panel: permorm a keywoard search (only option currently supported), a regex search or a semantic search (using sentence embeddings similarity).
• Positive predictions: filter by non-labeled elements. See Issue Add option to show positive predictions for unlabeled elements only #468.
• Positive labels: change this panel to "User labels" and add three options/filter which would be "Negative labels", "Positive labes" or "All labels".
• Precision evaluation: add recall evaluation support and so add the options for Recall and Precision while changing the panel name to "Evaluation" or "Model evaluation".

I will start searching for design option. Let's use this issue to iterate over the possible design solutions.

Note: some of the options wouldn't make sense to implement now as they are not supported, but I just added them in order to show that we need to pay attention to preserve the same look and feel for all the panels.