[FEATURE] Add a column option for simplified File / directory size

[firefox97]

Problem Statement

The size column has to be pretty wide and can be hard to quickly see the relative sizes.
Would be super cool for minimal layouts, and quick view of size. Can always look at Status bar, or preview etc for full size, or change file view to normal detailed that would have the full size.

Proposed Solution

Could we have another size column for min width? A bit like the colored age column. Maybe try for 2 digits and one letter 23 B = 23B, 235B = .23K 2345B = 2.3K 234MB = .23G
Maybe colors for each size? Often I just care are we talking kB or MB or GB....

Alternatives Considered

No response

[m1l]

This and some other columns are auto calculated by the largest text that could end up there, or it would end up as "12.5..." depending on font, pixel snapping, etc. There are already several size display options available, and additional one could be added but it has to be a proper standard (probably no "G").
Is it #.# xB

[Nathan-Fox-tfs]

The goal is similar to the Age field so a simple view giving a quick glance at size range. 2 digits seems like it would be enough, if the decimal is allowed to move.

[firefox97]

I changed it to match colors with KB / MB, not if K or M is shown.

Also Added a 3 digit idea, not quite as minimal, but really boils down to don't show the decimal place if the whole number has 3 digits, and show to decimals if the whole number is only 1 digit.
But allows to column width to be known and smaller since there will never be more than 3 digits..

[m1l]

I'll consider it for further improvement but for next update I have reduced size width by one letter as I was calculating it originally with 2 decimal points instead of 1. You can also control padding on Size column in fileview editor