[suggestions] improving search results

[cjh0613]

Currently, the query keywords searched by https://xlog.app/search are case-sensitive.

To improve search results, it is recommended to modify it to be case-insensitive.

Thanks

[DIYgod]

I feel that this will affect the efficiency of database queries. cc @birdgg

[birdgg]

Prisma not support case insensitive query on JSON value field now. 😿

https://github.com/prisma/prisma/issues/7390

[DIYgod]

This is truly shocking, but we can keep this issue and wait for prisma's support.