Some conversion related fixes

[ffreyer]

Description

This fixes a few small conversion related issues and adds tests for them:

• Supporting GeometryBasics geometries #660: extended convert_arguments
• StackOverflowError when passing tuple (instead of a color type) for colormap #1297: added to_color method
• textpadding could accept a single Integer #2351: added to_lrbt_padding which handles Real, VecTypes{2} and VecTypes{4}. Reused for tooltip
• NaN in roation breaks entire axis #4041: added safeguard for NaN rotation and markersize, rather than error

Type of change

• Bug fix (non-breaking change which fixes an issue)

Checklist

• Added an entry in CHANGELOG.md (for new features and breaking changes)
• Added unit tests for new algorithms, conversion methods, etc.
• Added reference image tests for new plotting functions, recipes, visual options, etc.

[MakieBot]

Benchmark Results

SHA: 94bb82a5cd17267108ab1c331377a3d05dce8fdf

Warning

These results are subject to substantial noise because GitHub's CI runs on shared machines that are not ideally suited for benchmarking.