Usage-based Filters

[lars-reimann]

Is your feature request related to a problem? Please describe

Since the editor does not have the usage data available, it's not possible to filter the API elements using usage data.

Desired solution

Add two filters:

• is:used
• is:useful

to filter the tree view and show only the respective API elements. The default state of the filter box should also be to only show used and useful API elements.

Possible alternatives

• usages:>3
• usefulness:>10 (meaning: for classes/functions identical to usages:>10, for parameters: there are more than 10 usages of values of than the most common one)

Operators: :<, :<=, : (equality), :>=, :>

Additional context (optional)

• Blocked by Load usage data into editor #494.