as distinct symbols vs the scalebar line symbol
Allows for styling division and subdivision symbols in a different
way compared with the horizontal line symbol in a tick scalebar
Sponsored by SLYR
standard QGIS line symbols
Instead of the previous settings of scalebar line color/width/cap styles,
we now expose the option as a full line symbol for more advanced styling
Also some code cleanups
Sponsored by SLYR
Gives users control over all the formatting properties for the numbers
in scalebars, including whether they want thousand separators, decimal
places, scientific notation, etc
Fixes#21341
