Add language support check for PP-OCRv5 model in PaddleOCR

[thejjw]

Introduce a check for language support in the PP-OCRv5 model context: https://github.com/PaddlePaddle/PaddleOCR/issues/15373

The language check for v5 is based on the readme documentation that says "🌐 Single-model support for five text types - eamlessly process Simplified Chinese, Traditional Chinese, Simplified Chinese Pinyin, English and Japanse within a single model."

[paddle-bot[bot]]

Thanks for your contribution!

[CLAassistant]

All committers have signed the CLA.

[thejjw]

commit fa621ef integrated yesterday includes similar code to my pr that checks the languages and effectively resolves the issue, albeit without giving proper credit one might say.

i don't know why my pr is left without reaction but i guess you can close the issue.

thanks.

[cuicheng01]

Thank you for taking the time to help fix the issue. In fact, we need to change the default model here from mobile to server and add relevant monitoring. Therefore, your PR has not been merged. We really appreciate your initiative in addressing this problem.