#9 Feat: Add content padding to canvas scaling for better touch handl…

[ThomasKiljanczykDev]

…e accessibility

• Introduced contentPadding based on touchPadding to ensure crop handles at the edges remain within the interactive canvas bounds.
• Updated scaledSize calculation and offset positioning to account for the new padding, centering the bitmap within the available padded space.

Fixes # (issue)

Type of change

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• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as
  expected)
• This change requires a documentation update

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Please also note any relevant details
for your test configuration.

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings