Only the start interactive was moved if lines were deleted to clamp the vector size. Also fixed the code so the interactives always move if lines get deleted from before their positions, instead of "if" only the mouse is held down.
This allows us to reset the horizontal position only when an user submitted a console command in the text box. We don't want to reset the horizontal position if new lines are added since user could still be reading text that is otherwise clipped away.
This code originated from an imgui code editor, where it would make sense to have per-character colors. But for the console, we only ever do 1 color per line. Just store the string and one color instance, this also allows us to just take the string instead of manually reconstructing it which is very slow. The code now also only stores 32bits for color (per line) instead of 128 bits (ImVec4) as we only ever need to convert it once.
As a result, a bunch of rendering code could be dropped, and the pass filter is now also very fast as we don't need to reconstruct the string to check for the filter, we just pass a char* in which doesn't cost any perf.
* Better structure packing (reduced padding).
* 'CTextLogger::GetFilter' now returns a reference to 'm_itFilter'.
* Added additional setters and getters.
