Parent for objects - new functions

Need new functions to change parent in outliner and see this in 2 way:

1. Moving objects in outliner hierarchy to other place as under other objects - thats mind new place = new hierarchy for parent

2. Id parent number in outliner and id relation

• outliner can have column with .no (number), eg. col A is number, col B is name of scene collection, col C is number as relation to col A (something like Project Managment task managment)
• then we can easy change relation for object when in col C we changing number from col A to made new relation and parent by input field
• in some way we can have search by number of cols A or C, by changing type of search in outliner where default is col B (names) - can be some combolist as A(id), B(names), C(relations)
• cols A, C can be hiden

I thinking about colours for symbol object in outliner in relation to colours of viewport, eg. gray cube = gray triangle (why triangle not cube as more friendly to "box"/object or other icons from mesh?) not orange, and the lines colours gray. If cube is blue, then triangle on outliner blue and lines blue.

In fact need add parent from froum outliner, to not search right object on viewport, eg. the empty object.