Feature/box padding local

[jay-k98]

📌 Related Issue
Closes: #6

The box decoration currently offers no option to increase the padding between text and box itself. This leads to the boxe's borders being directly stuck to the text, which also leads to some letters being partly outside the box. See the screenshot i.e. the "q" of "quer" is partly outside the box.

✅ What’s Changed
This PR enables users to define a Padding via EdgeInsets for the Box Painters (RoundedBoxPainter, // TODO...)

🧪 How It Works
Calculate the new offset center using the EdgeInsets

🔍 Confirmation

• Padding is applied correctly, even for different values
  • e.g. EdgeInsets.only(left: 4, top: 8, right: 16, bottom: 24).

📸 Before / After

Before	After

[TobiasRump]

please revert android changes @jay-k98

[TobiasRump]

lgtm