online search: add 3-dots to configure which distance is shown

MyLibrary search, Map manager and many other screens have a three dots icon, usually on right of an entry or the screen. Clicking it allows to configure stuff for that content/screen, e.g. change it's display. Please add a 3 dots menu to search and add a switch between distance from user's GNNS/physical to result and distance from screen center. In the future, further configurations concerning search could also go here, e.g. which languages are crawled (topic for points & addresses search).

Example use case: When travelling, others told about a nice spot in the next city we'll head for. They tell it's around 7km south of that city. I want to see where the spot is, set a point in MyLibrary, roughly check how to get there. I search the spot's name and get dozens of results. I could easily identify the desired result if distance & direction were shown from screen position (=the next city) instead of my current position (=current city, hundreds of km away). Locus 4.36.1 does not offer the first.