pipette tool update request: pick way, pick tram-way

[poppo]

Pipette tool is one of the wonderful tool to build!
However, we pick only the surface object, so we cannot get object at the base of each ground, especially way or tram-way.
So, I request 2 things:

• when ctrl key pressed: we get way info if there is (no check halt,roadsign,wayobj)
• when shift key pressed: we get way_nr(1)'s object (wayobj or way) info if there is (tram_track, crossing etc.)

when we press both ctrl and shift, we can get way_nr(1)'s way.

If you want to test this tool-request, please play OTRPatch v51_2 https://github.com/teamhimeh/simutrans/releases/tag/v51_2