Adds custom spacing to lists

[icopano]

Added the possibility to setup a custom spacing to List. I saw this in a closed issue which was never addressed and thought It would be a nice addition. This implementation assumes the use of a constant spacing.

[codecov[bot]]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (b7c7e7e) 78.86% compared to head (2b49646) 78.86%. Report is 2 commits behind head on main.

Files	Patch %	Lines
Source/Internal/List/PDFListObject.swift	80.00%	2 Missing :warning:

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #352   +/-   ##
=======================================
  Coverage   78.86%   78.86%           
=======================================
  Files         212      212           
  Lines       12607    12617   +10     
=======================================
+ Hits         9942     9950    +8     
- Misses       2665     2667    +2     

Flag	Coverage Δ
iOS	79.77% <80.00%> (+<0.01%)	:arrow_up:
macOS	0.00% <0.00%> (ø)

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[philprime]

Hi @icopano! Sorry for my super late response, busy times and this got lost in my inbox.

Your implementation looks straight away, but I will adapt it slightly, so the flatted() method to find the last element isn't called on every single loop.

[philprime]

Ok it looks like I can't push to your branch because of branch protections of the main branch (it's often easier to create a new branch after forking).

Instead I pushed my recommended changes in the branch issue-352-adaptions, and I would kindly request you to adapt your PR according to it. I also merged main into it, because I did a lot of changes in the last weeks, and there is a merge conflict.

Commit with my changes: https://github.com/techprimate/TPPDF/commit/730bcf38908ec5cc995001d4ff90d29dfde14f7a