Implement keyword filtering and language (character range) limit to merger Zites

I've seen a lot of c---d p--n-----y stuffs that were flooded around ZeroNet, also on the place where it is not intended to be. Even that ZeroNet does have merger content removal feature, but it's not that convenient.

I'm already on my own project, a decentralized social network platform, so I come up with an idea. Even that there's certainly no way to block c---d p---n media (like images or videos) efficiently, but we have control over text-based stuffs. Merger Zite owner will add keywords, or sentences that they would not want it to be in their Zite. When user submit a content that has been filtered, seeders will automatically decline it, or even block its owner. And yes, culprits may find their way by adding unknown but resembles English characters into it, so character range limit comes into the rule. Any characters that were not associated to English or any languages Zite owner had not yet specified will also be declined by seeders.

This may break over the purpose of ZeroNet, but not anyone would want to see those stuffs, right?

Issue không xác định tệp, bài kiểm thử hay điểm vào cụ thể nào. Hãy bắt đầu bằng cách tìm tính năng xóa nội dung hiện có của merger được đề cập trong phần mô tả, sau đó làm rõ các yêu cầu về lọc và phạm vi ký tự trước khi triển khai. Done sẽ yêu cầu một thiết kế được thống nhất và các bài kiểm thử tương ứng.

Do mô hình lập chỉ mục viết ra từ nội dung của issue.