This PR allows users to specify a custom hex code for the accent color, resolving issue #411.

Changes

• Added custom to the catppuccin.accentColor enum in package.json.
• Introduced a new catppuccin.customAccentColors configuration object to accept hex codes for all or per-flavor (latte, mocha, etc.).
• Updated TypeScript types to support the new configuration.
• Implemented the logic in compileTheme to use the custom color when accentColor is set to custom.

Testing

• Verified that existing accent colors work as before.
• Tested setting a custom color via customAccentColors.all.
• Tested setting different custom colors for mocha and latte and confirmed they apply correctly when switching themes.

Fixes #411