Quick navigation within the multiple results of rules

[JulienCochuyt]

Currently, rules that have the multiple property can be matched multiple times but there is no easy way to target a specific result within the collection of their results. Hence, they are mostly used for quick navigation or control mutation.

Proposals:

• Support cycling through each results when repeating the gesture bound to movement and announcement actions.
• Support a 4th quick navigation gesture (eg. alt+pagedown/alt+pageup to move to each results of the same rule.

This could be restricted to local results as proposed in #46 for rules with multiple results within multiple parent contexts, but not for rules with a single result within each of the multiple parent contexts.