[Interface Kit] Tracker column width improvements

[miqlas]

I frequently mess with files with long filenames, therefore i frequently have to move the divider [2] to see the whole filename, and this particular setting is a per-folder setting, which gets reset in every previously not visited folder and on non writeable disks. I have HD screen estate and use bigger fonts (~ 18pt) [1], hence i find this behaviour as unnecessary work for me. Afaik it is possible to set the default setting somehere, but why not just implement some minimum width respecting automatic width-adoptation? This could be making even smarter creating a preferred colum-types setting for different mime types, so the relevant fields would become fully visible using the zoom function, so the default width of the preferred columns would define the minimum width for the zoomed windows. [3]

[1] [Interface Kit] column width should grow with font size : https://dev.haiku-os.org/ticket/13176

[2] [BColumnListView] Rendering issues when adjusting column width : https://dev.haiku-os.org/ticket/14888

[3] Zoom button behavior improvements : https://dev.haiku-os.org/ticket/8665