feat: enhance Pix2Text initialization with total_configs support

Update 2026.02.07: V1.1.6 Released

Major Changes:

• The Pix2Text class now supports config-based initialization directly via __init__, with the same parameters as from_config(). Users can now use Pix2Text(total_configs=..., enable_table=True, device='cuda') instead of Pix2Text.from_config(...).

主要变更：

• Pix2Text 类现在支持通过 __init__ 直接进行基于配置的初始化，参数与 from_config() 相同。用户现在可以使用 Pix2Text(total_configs=..., enable_table=True, device='cuda') 代替 Pix2Text.from_config(...)。