feat: Add missing parameters to InlineTextStyle

[luanpotter]

Description

Add missing parameters to InlineTextStyle, such as height and shadows.

Without this, it is not possible to configure such parameters in the new text rendering pipeline. Since the other parameters are 1:1 to Flutter's TextStyle, these missing fields seem to have been just an oversight.

However, it does make me question why are we copying the values from Flutter's class. I don't see why we could not just replace all these fields with a single TextStyle field. In fact, we could just make TextPaint extend FlameTextStyle and get rid of InlineTextStyle altogether. Either way, these can be followups.

Checklist

• I have followed the Contributor Guide when preparing my PR.
• I have updated/added tests for ALL new/updated/fixed functionality.
• I have updated/added relevant documentation in docs and added dartdoc comments with ///.
• I have updated/added relevant examples in examples or docs.

Breaking Change?

• Yes, this PR is a breaking change.
• No, this PR is not a breaking change.