Add option to show minor tick marks aswell

[Sniggi1337]

Showing "..." for minor tick mark labels is not a suitable option for many cases so I added a switch to change that behavior.

[eselmeister]

@Sniggi1337 Please adjust the copyright header to the year of editing:

from
Copyright (c) 2008, 2019 SWTChart project.
to
Copyright (c) 2008, 2025 SWTChart project.

I'll then test your PR.

[Sniggi1337]

@eselmeister I adjusted the copyright text

[eselmeister]

@Sniggi1337 Thanks for your PR. After inspecting it thoroughly, I think you are able to achieve your desired tick display even without changing the source code. The less options, the better.

When activating your setting to true:

We disabled displaying the same number to not confuse customers by repeating values. Instead, you can tweak the axis decimal format in the following way:

IPrimaryAxisSettings primaryAxisSettingsX = chartSettings.getPrimaryAxisSettingsX();
primaryAxisSettingsX.setDecimalFormat(new DecimalFormat(("0.00####"), new DecimalFormatSymbols(Locale.ENGLISH)));
...
secondaryAxisSettingsX.setDecimalFormat(new DecimalFormat(("0.00####"), new DecimalFormatSymbols(Locale.ENGLISH)));

[Sniggi1337]

@eselmeister I agree, that the solution you suggested is better for this use case but my main problem was that there is no way to get rid of the "..." in certain situations. (I might not need/want the added accuracy in the axis label)